Top Blockchain Companies & Developers in Sofia

Ratings Updated: April 14, 2026

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10 Leaders 15 Contenders

27 Companies

Country: Bulgaria

City: Sofia

List of the Top Sofia Blockchain Development Companies

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RedDuck

5.0 13 reviews
Verified

$10,000+

$50 - $99 / hr

10 - 49

Serves Sofia, Bulgaria

Services provided

100% Blockchain

RedDuck is a blockchain development company specializing in delivering comprehensive blockchain solutions, including smart contract development, distributed ledger technology, and decentralized application (DApp) development. Clients consistently praise their technical precision, proactive communication, and ability to deliver projects on time, with a 100% satisfaction rate highlighted across multiple reviews. Their expertise in blockchain technology and strategic product development is noteworthy.

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Reviews mention Unique expertise
Clients have expressed strong satisfaction with RedDuck's unique expertise, particularly in functional programming and Solidity code testing. One client noted the 'large concentration of functional programming expertise' as a distinguishing feature. The quality of code produced was highlighted as 'very high,' and the team's ability to adjust their approach based on feedback was commendable. Overall, the sentiment is highly positive, with clients recommending RedDuck for their specialized skills and adaptability.

Custom Software Development for Blockchain Company

5.0 Mar 18, 2022

I was impressed by RedDuck’s large concentration of functional programming expertise, which very few providers have.
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5 of 5 Blockchain reviews are 5 stars

2 new reviews for Blockchain in past 6 months

$50,000 – $199,999 avg. project cost

Blockchain PROJECT HIGHLIGHT

Blockchain Development for FinTech Company
5.0 — RedDuck developed a DeFi platform for a financial technology company. The team built the client's smart contracts, backend infrastructure, frontend app, user dashboard, landing website, and a Read more
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More responsive than most other service providers

RedDuck is very responsive
They are a great candidate to start a conversation with. Send them a short message or project inquiry.
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Germany (1) India (1) South Africa (1) Thailand (1) Ukraine (1) United States (1) England (1)

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LimeChain

4.9 6 reviews

$5,000+

$50 - $99 / hr

50 - 249

Sofia, Bulgaria

Services provided

70% Blockchain

10% Custom Software Development

10% IT Strategy Consulting +1 service

10% Mobile App Development

LimeChain is a Blockchain Development company offering services such as Smart Contract Development and Decentralized System Development. The company receives positive feedback for its timely delivery and high-quality solutions, with 100% of reviewers appreciating their proactive approach and strong talent. They are noted for integrating complex blockchain technology seamlessly and aligning with clients' long-term goals.

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Reviews mention Transparent
Clients consistently praised LimeChain for their transparency throughout project management. One client highlighted their 'transparent and accurate reporting,' noting that neither the project scope nor budget deviated, which is crucial for their work. Another client appreciated the structured, milestone-driven approach, emphasizing clear ownership and regular check-ins. Overall, the sentiment reflects a strong approval of LimeChain's commitment to transparency, contributing positively to client trust and project success.

Blockchain Development for Scientific Research Startup

5.0 Aug 8, 2018

Initially, we didn’t use a project manager or exact timelines because the scope kept changing. We made last-minute changes that they often accommodated within 24 hours. The team was flexible, but now uses a project manager and Jira to organize the project. LimeChain converts data from Jira into timesheets to invoice us. While the team could improve its project management skills, they’re more transparent than they used to be.
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Blockchain Development for Property Protection Company

5.0 Aug 7, 2018

The team is very professional. The project manager coordinates with his team of specialists for coding, payment solutions, UX design, and prototype building. They’re a quickly growing company (and I’m happy for their success), but at the same time, it’s small enough that the founders are still actively involved in each project. LimeChain is transparent with transparent and accurate reporting. Neither their scope nor budget deviates, which is important for projects like this one.
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Blockchain Dev & Design for Web3 Gaming Company

5.0 Jan 20, 2026

LimeChain ran a structured, milestone-driven project with clear ownership, regular check-ins, and transparent tracking of scope, risks, and dependencies across design, engineering, and smart contracts.
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1 of 2 reviews are 5 stars

2 new reviews for Blockchain services

$200,000 – $999,999 avg. project cost

Reviewed 2 times in the past 6 months
Recent reviews of LimeChain highlight their strong project management, timely delivery, and high-quality talent. Clients from Coinbase and Pixels commend LimeChain's ability to integrate seamlessly into their teams, delivering complex solutions such as staking platforms and smart contracts. Notably, one client praised LimeChain for challenging assumptions and designing scalable systems. However, there is feedback regarding the English communication skills of some technical team members, suggesting an area for improvement.
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Industry Experience

LimeChain has demonstrated expertise across various industries, notably Gaming, Information Technology, and other sectors such as digital economies and intellectual property protection. Feedback highlights their strengths in delivering robust smart contract solutions, user-friendly interfaces, and effective project management. Clients appreciate their proactive communication, innovative approach, and ability to adapt to evolving project scopes. Overall sentiment reflects a high level of satisfaction, particularly in the technology and gaming sectors, making LimeChain a suitable partner for blockchain-related projects.
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Other Industry Information technology IT Services Gaming Other industries

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Average Project Cost Breakdown

$50,000 to $199,999 (2) $200,000 to $999,999 (1)

What Clients Have Said
Clients consistently highlight LimeChain's competitive pricing and strong value for money. One client noted that they chose LimeChain due to their 'good value for cost' and 'super-responsive' nature during the RFQ process. Another mentioned that LimeChain delivered on time and within budget, which is described as 'not normal' in the industry. Overall, the sentiment is positive, with clients appreciating the balance of quality service and reasonable pricing.
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Quanterall

5.0 3 reviews

$50,000+

$50 - $99 / hr

50 - 249

Sofia, Bulgaria

Services provided

30% Blockchain

30% Custom Software Development

15% IoT Development +2 services

15% Web Development

10% Mobile App Development

Quanterall is a software development company specializing in blockchain, smart contracts, and financial transaction systems. They are praised for their technical expertise, effective communication, and professionalism, with 100% of reviews mentioning high-quality deliverables and strong project management. Clients value Quanterall's flexibility and ability to integrate advanced technologies into complex projects efficiently.

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Reviews mention Unique expertise
Quanterall has been recognized for its unique expertise in niche technologies, particularly in financial transaction systems. A client noted their strong technical background, stating that Quanterall's team significantly contributed to developing a testing back-end system using Erlang, which improved error detection in new features. The professionalism and motivation of Quanterall's team were also highlighted, indicating a positive overall sentiment regarding their specialized skills and capabilities.

EMV Simulator for Financial Technology Company

5.0 Nov 29, 2021

A testing back-end system was developed by using Erlang. Its main tasks were strongly tied with cryptography and financial transaction specifications. Expertise used were in financial transaction message protocol ISO-8583 and Acquirer ISO 8583 Message Format protocol operated by banks and or acquirers in their communications and a block cipher streams conception. Enhancing the existing infrastructure resulted in reduced finding error time during new features development.
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Industry Experience

Quanterall has demonstrated expertise across multiple industries, notably IT Services, Financial Services, and Logistics & Supply Chain. Clients commend their strong programming capabilities in Haskell and Erlang, effective testing practices, and flexibility in project management. The overall sentiment is highly positive, with clients noting Quanterall's ability to deliver high-quality solutions tailored to specific industry needs, particularly in developing financial smart contracts and integrated software solutions.
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IT Services Financial services Logistics & Supply Chain

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Average Project Cost Breakdown

$10,000 to $49,000 (1) $50,000 to $199,999 (1)

What Clients Have Said
Quanterall is noted for delivering high-quality solutions that provide good value for money. Clients expressed satisfaction with the cost-effectiveness of their services, with one reviewer highlighting the company's ability to enhance existing systems efficiently. Another emphasized the strong relationship built through talent development, which contributed to the perceived value. Overall, feedback indicates that clients found Quanterall's pricing aligned with the quality of work delivered, reinforcing a positive sentiment regarding their cost and value proposition.
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INDUSTRIA

5.0 4 reviews

Undisclosed

Undisclosed

10 - 49

Sofia, Bulgaria

Services provided

50% Blockchain

30% Custom Software Development

20% UX/UI Design

INDUSTRIA is a distinguished company specializing in Distributed Ledger Technology and Blockchain Solutions, adept in areas like Smart Contract Development and Decentralized System Development. The feedback is overwhelmingly positive, with 100% of reviewers praising their project management skills and commitment to innovation, highlighting their effective collaboration and cost-effectiveness. INDUSTRIA is commended for their exceptional engineering and realistic approach to complex challenges.

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1 of 1 Blockchain reviews are 5 stars

$1,000,000 – $9,999,999 avg. project cost

Blockchain PROJECT HIGHLIGHT

Blockchain Development for Automation Machinery Company
5.0 — INDUSTRIA is working on two projects for a virtual economy company. They do blockchain development, building the product from scratch and working collaboratively with the internal team. Read more
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Industry Experience

INDUSTRIA has demonstrated strong expertise in various industries including Software, Utilities, Environmental Services, and other sectors requiring decentralization technologies. Clients highlight their proficiency in developing Corda-based solutions, exceptional project management, and effective communication. Positive feedback emphasizes their engineering capabilities, proactivity in problem-solving, and commitment to delivering on time and within budget. Overall, INDUSTRIA is well-suited for projects in fintech, energy, and sustainability, making them a valuable partner for similar ventures.
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Other Industry Software Utilities Environmental Services

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Average Project Cost Breakdown

$50,000 to $199,999 (2) $1,000,000 to $9,999,999 (1)

What Clients Have Said
Clients consistently remark on INDUSTRIA's cost-effectiveness and strong value for money. One client noted that their development costs were included in a £2 million project budget, emphasizing their affordability. Another highlighted that they delivered a product on time and on budget, while also providing additional support beyond the initial agreement. Overall, feedback reflects satisfaction with INDUSTRIA's pricing structure, their commitment to project success, and the quality of service provided.
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EntroSolutions

4.9 7 reviews

$5,000+

$50 - $99 / hr

10 - 49

Sofia, Bulgaria

Services provided

10% Blockchain

40% Custom Software Development

20% E-Commerce Development +3 services

10% IT Strategy Consulting

10% Web Design

10% Web Development

EntroSolutions is a versatile software development company with a strong focus on web development, custom software solutions, and technical optimization. Across their reviews, 100% of clients commend their professional knowledge, flexibility, and effective communication, with a substantial number highlighting their ability to tailor solutions and adapt to client needs. Their project management is often praised, with timely delivery and a client-centric approach consistently noted.

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Reviews mention High-quality work
EntroSolutions consistently receives positive feedback regarding the high quality of their work. Clients commend their professionalism, comprehensive solutions, and ability to meet specific project needs. One client noted, 'EntroSolutions is very professional and provides high-quality work,' while another highlighted their 'professional attitude, skills, and ability to work under pressure.' Overall sentiment reflects a strong appreciation for their expertise and problem-solving capabilities, with no significant areas for improvement mentioned by clients.

Web Dev & Maintenance for Online Homewares Retailer

5.0 Mar 2, 2022

EntroSolutions is very professional and provides high-quality work. I’ve always received comprehensive solutions that meet our needs.
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Shopify App Dev for Shopify Agency

5.0 Feb 4, 2021

Everything in the technical part of the project was communicated and developed with excellent quality. We had a few organizational misunderstandings.
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Industry Experience

EntroSolutions has demonstrated expertise across various industries, including Medical, IT Services, Retail, Financial Services, Advertising & Marketing, and Education. Feedback highlights their strengths in website development, SEO, and custom software solutions, with notable client satisfaction regarding communication, professionalism, and timely delivery. Overall sentiment is positive across industries, indicating a strong fit for clients seeking robust digital solutions, particularly in sectors requiring tailored web development and technical support.
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Medical IT Services Retail Financial services Advertising & marketing Education

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Average Project Cost Breakdown

$10,000 to $49,000 (3) Less than $10,000 (2) $50,000 to $199,999 (1) $200,000 to $999,999 (1)

What Clients Have Said
Clients consistently praise EntroSolutions for delivering high-quality work at competitive prices, highlighting their expertise and flexibility. One client noted, 'They were a combination of a good price and expert knowledge!' Another remarked on their ability to provide comprehensive solutions despite budgetary constraints, stating, 'We generally spend $40,000–$50,000 with EntroSolutions per year.' Overall, the sentiment reflects strong satisfaction with the value provided relative to cost.
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Bulgaria (3) Germany (2) England (2)

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hack bg - Blockchain & DLT Solutions

5.0 1 review

$5,000+

$50 - $99 / hr

10 - 49

Sofia, Bulgaria

Services provided

80% Blockchain

10% Custom Software Development

5% IT Strategy Consulting +1 service

5% Other Application Development

hack bg - Blockchain & DLT Solutions is a specialized firm focusing on blockchain and distributed ledger technology services, particularly in developing secure smart contracts and web3 integrations. Reviews highlight their exceptional project management and high-quality deliverables, with 100% of feedback emphasizing their effective communication and ability to meet deadlines consistently. The team's adaptability and direct client interaction are also notably praised.

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Industry Experience

Hack bg - Blockchain & DLT Solutions has demonstrated expertise in the Arts, Entertainment, and Music industry, particularly in developing NFT projects. Clients praise their effective communication, timely delivery, and high-quality work, noting robust security measures in smart contracts. The feedback suggests they excel in collaborative environments and adapt well to client needs. Overall, their impact in the NFT space is seen as highly positive, making them a suitable partner for projects requiring blockchain technology and web3 solutions.
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Arts, entertainment & music

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Average Project Cost Breakdown

$10,000 to $49,000 (1)

What Clients Have Said
Clients have praised hack bg - Blockchain & DLT Solutions for delivering high-quality work on time, indicating strong value for money. One client noted that the team provided exceptional service and security in their blockchain project, leading to a flawless launch. However, there was feedback regarding the initial scope management, suggesting that clearer communication about limitations could enhance project efficiency. Overall, the sentiment reflects satisfaction with the company's cost-effectiveness and the quality of their solutions.
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Review Rating from Clients

5.0/5.0

Quality

5.0

Schedule

4.5

Cost

4.0

Willing to Refer

5.0

Sofia-based hack bg specializes in blockchain and DLT solutions, delivering secure smart contracts, web3 integrations, and NFT platforms. Clients praise their high-quality, timely work, effective communication, and dedicated team, making complex projects like NFT launches smooth and reliable.
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SoCyber

5.0 13 reviews

$1,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

10% Blockchain

10% Application Management & Support

10% Application Testing +7 services

10% BI & Big Data Consulting & SI

10% Corporate Training & Coaching

10% Cybersecurity

10% Graphic Design

10% Public Relations

10% Social Media Marketing

10% Web Development

SoCyber is a cybersecurity company specializing in penetration testing, security audits, and vulnerability assessments. The reviews highlight their professionalism and effective project management, with over 90% of reviews praising their timely delivery and customer-centric approach. Clients appreciate their ability to communicate complex technical information clearly and their commitment to providing tailored solutions, with many noting their proactive collaboration and quality service.

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Reviews mention Detail-oriented
Clients have highlighted SoCyber's exceptional attention to detail, particularly in their penetration testing services. One client noted that SoCyber's meticulous approach not only identified vulnerabilities but also provided valuable insights tailored to their business needs. Their project management was praised for being highly professional, with consistent on-time delivery and responsiveness to client inquiries. Overall, the sentiment reflects a strong appreciation for SoCyber's commitment to quality and thoroughness in their work.

Cybersecurity Services for Software Development Company

5.0 Aug 13, 2023

What truly set SoCyber apart was a combination of their exceptional quality of work and their positive, client-centric attitude. The meticulous attention to detail they showed in their penetration testing of our internal ERP system was beyond our expectations. They not only identified and remediated vulnerabilities but also provided insights and recommendations that demonstrated a deep understanding of our business needs and industry standards. Their attitude was equally impressive. Throughout the project, they maintained a proactive, collaborative approach, always eager to understand our unique requirements and to tailor their services accordingly.
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Industry Experience

SoCyber has demonstrated strong expertise in the information technology, software, consulting, and financial services sectors. Clients consistently praise their professionalism, efficient project management, and the ability to identify and remediate security vulnerabilities effectively. Positive feedback highlights their thorough penetration testing, regulatory compliance support, and strong communication. Overall, SoCyber is well-suited for companies in these industries, particularly those seeking to enhance cybersecurity measures and ensure compliance with industry standards.
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Information technology Software Consulting Financial services IT Services

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Average Project Cost Breakdown

Less than $10,000 (11)

What Clients Have Said
Clients consistently highlight SoCyber's competitive pricing and strong value for money. For instance, a CTO noted that SoCyber's pricing fit their budget while ensuring a good value for the cost. Similarly, another client appreciated the range of service options from basic to complex, allowing for flexibility in expenditures. Overall, sentiment towards SoCyber's cost-effectiveness is positive, with many clients expressing satisfaction with the quality of services received relative to the investment made.
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Motion Software

5.0 2 reviews

Undisclosed

Undisclosed

50 - 249

Sofia, Bulgaria

Services provided

20% Blockchain

30% Custom Software Development

20% Mobile App Development +2 services

15% IT Staff Augmentation

15% Web Development

Motion Software is an IT development company specializing in web and frontend application development, including React and Angular. According to client reviews, 100% of their projects were completed successfully and on time, with clients praising their professionalism and effective collaboration. Additionally, 50% of reviewers highlighted the company's impressive ability to understand specific project needs.

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Reviews mention Professional
The feedback regarding Motion Software's professionalism is overwhelmingly positive. A CEO noted the 'impressive' level of professionalism from all involved, highlighting their effective collaboration and attention to detail. The team's integration into the client's office and responsiveness to feedback further underscored their commitment to professional standards. Overall, clients express high satisfaction with the professionalism exhibited throughout their projects.

IT Consulting & SI for Development Studio

5.0 Dec 14, 2021

They have sent a person directly in our office to become part of our team and we enjoyed the level of detail on the report meetings and in the monthly reports. The level of professionalism of all people involved was impressive. All the feedback that I have shared with them was taken into account immediately, so as of that moment I don't see anything.
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Industry Experience

Motion Software has demonstrated strong expertise in the IT Services industry, particularly in financial technology and startup development. Clients commend their effective collaboration, professionalism, and timely project completion, particularly in frontend development using frameworks like React and Angular. The overall sentiment is positive, indicating that Motion Software is a reliable partner for projects requiring technical proficiency and a responsive approach across various IT sectors.
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IT Services

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Average Project Cost Breakdown

Less than $10,000 (1) $10,000 to $49,000 (1)

What Clients Have Said
Clients consistently highlight Motion Software's competitive pricing and excellent value for money. One client noted their reputation and work ethic as key factors in their decision, while another praised the company's professionalism and effective collaboration, which contributed to successful project completion on time. Overall, the sentiment reflects satisfaction with the cost relative to the quality of service provided, with no specific areas for improvement mentioned regarding pricing.
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Review Rating from Clients

5.0/5.0

Quality

5.0

Schedule

5.0

Cost

5.0

Willing to Refer

5.0

Sofia-based clients praise Motion Software for their professionalism and seamless collaboration on Angular frontend projects, including blockchain exchange solutions. Their dedicated team integrated smoothly into client workflows, delivering timely, high-quality results with excellent communication and responsiveness.
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MENA Software

4.8 4 reviews

$5,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

25% Blockchain

15% Back Office Outsourcing

10% BI & Big Data Consulting & SI +5 services

10% Business Consulting

10% Custom Software Development

10% IoT Development

10% Mobile App Development

10% Web Development

MENA Software is a versatile software development company specializing in platform development, blockchain solutions, and app creation. Their services have received overwhelmingly positive feedback, with approximately 100% of clients noting their effective project management and dedication. Clients consistently highlight the company's strong competence, high-quality output, and affordability, with no major areas for improvement suggested.

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Reviews mention Professional
MENA Software has received positive feedback regarding their professionalism in service delivery. A managing partner noted that the team was 'professional and prompt' while also highlighting their 'remarkable' customer interactions. Clients expressed high satisfaction with the quality of work and affordability, indicating a strong alignment with their project needs. Overall, the sentiment reflects a commendable level of professionalism, although there is a suggestion for the company to increase its workforce.

Software Update for Online Consulting Service

5.0 Oct 19, 2018

MENA Software was professional and prompt. The way they work and deal with customers is remarkable. They also offer great prices.
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Industry Experience

MENA Software has demonstrated expertise across several industries, including Information Technology, Advertising & Marketing, Gaming, and IT Services. Clients commend their project management effectiveness and technical competence, with particular praise for their ability to deliver high-quality solutions efficiently. Feedback indicates strong satisfaction in software development and design, particularly in blockchain and gaming projects, suggesting they are well-suited for clients in these sectors looking for reliable and innovative technology partners.
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Information technology Advertising & marketing Gaming IT Services

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Average Project Cost Breakdown

$10,000 to $49,000 (2) Less than $10,000 (1) $50,000 to $199,999 (1)

What Clients Have Said
MENA Software has received positive feedback regarding their overall cost and value for money. Clients highlighted their cost-effective solutions, with one stating that their services were 'affordable' and another noting that they provided 'excellent' service at great prices. Additionally, a client emphasized the team's efficiency and project management, describing them as 'cost-effective' and 'professional.' Overall, clients express high satisfaction with the value received for the investment made.
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Generic Soft

5.0 11 reviews

$10,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

15% Blockchain

30% Custom Software Development

30% Web Development +3 services

10% AI Development

10% Mobile App Development

5% IoT Development

Generic Soft is a specialized software development company with a focus on Blockchain Technology and Distributed Ledger Development. Reviews highlight their expertise in delivering Blockchain Solutions with 100% positive feedback on communication efficiency and project management. Clients appreciate their proactive attitude and ability to meet deadlines, with approximately 90% noting alignment with company values and cost-effectiveness.

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Reviews mention Accommodating
Client feedback highlights Generic Soft's accommodating nature, particularly in their project management. Clients praised the team for their professionalism and dedication, noting their responsiveness to evolving project requirements and proactive communication. One client emphasized their client-centric ethos, stating that Generic Soft actively seeks input and aligns deliverables with client objectives. Overall, the sentiment is overwhelmingly positive, with no identified areas for improvement, reflecting a strong commitment to client satisfaction.

Custom Software Development for B2B Consultancy

5.0 Jan 8, 2024

Generic Soft's project management team epitomises professionalism and dedication, consistently showcasing their prowess in delivering projects promptly and adeptly responding to client needs. Renowned for their unwavering commitment, the team goes above and beyond, investing extra hours and meticulous attention to detail to ensure project success. Embracing agile methodologies, they exhibit adaptability and flexibility to respond swiftly to evolving project requirements. Proactive communication is a key tenet, maintaining open channels with clients, providing updates, sharing insights, and promptly addressing concerns.
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Industry Experience

Generic Soft has demonstrated expertise across multiple industries, including Consulting, IT Services, and Software. Feedback highlights their strengths in software engineering, project management, and adaptability, with clients noting timely delivery and effective communication. In the Consulting sector, they excelled in technical project solutions for public/private sectors, while in IT Services, they showcased strong collaboration in agile environments. The Software industry feedback emphasizes their thoroughness and professionalism, making them a suitable partner for clients seeking reliable software solutions.
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Consulting IT Services Software

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Bulgaria (6) England (2) Norway (1)

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Review Rating from Clients

5.0/5.0

Quality

4.9

Schedule

4.8

Cost

4.8

Willing to Refer

5.0

Sofia clients appreciate Generic Soft’s proficiency in full-cycle software development, including front-end, back-end, and DevOps. They value their proactive communication, technical expertise, and ability to adapt to project needs, successfully executing diverse projects like mobile apps, blockchain platforms, and enterprise systems with consistent quality.
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Smarch

5.0 2 reviews

$5,000+

$100 - $149 / hr

10 - 49

Sofia, Bulgaria

Services provided

10% Blockchain

30% Custom Software Development

30% Web Development +2 services

20% Mobile App Development

10% UX/UI Design

Smarch is a versatile technology company specializing in custom Shopify integrations and AI product recommendations. The company is highly praised for its quick execution and effective communication, managing to achieve results that others deemed impossible. With 100% positive reviews, clients emphasize Smarch's speed and attention to detail, with a notable 10% increase in average order value for one client.

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Reviews mention Timely
The feedback regarding Smarch highlights a strong sentiment towards their timeliness in project execution. Clients noted that Smarch completed tasks faster than expected, with one reviewer stating, "they solved all of these tasks in a matter of few days!" Additionally, another client appreciated the speed of execution, mentioning that they were able to accomplish what others deemed impossible in a shorter timeframe. Overall, clients expressed high satisfaction with Smarch's prompt and efficient service.

E-Commerce Development for Coffee E-Retailer

5.0 Nov 24, 2020

It's been great. Not only did we manage to do things which others claimed impossible. We also did it in a faster time than I expected from researching it.
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AI Development for Online Marketing Company

5.0 Apr 1, 2020

The speed of the execution blew us away. Every task was completed within a few days. It was managed by daily phone calls. We sorted everything out quickly online.
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Industry Experience

Smarch has demonstrated expertise primarily in the IT Services and Advertising & Marketing industries. Clients praised their custom solutions, particularly for subscription management and AI product recommendations, noting outstanding service and efficient project execution. Positive feedback highlighted their attention to detail and effective communication. Overall sentiment is highly favorable, indicating that potential clients in these sectors can expect strong support and impactful results from Smarch's services.
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IT Services Advertising & marketing

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Average Project Cost Breakdown

Less than $10,000 (2)

What Clients Have Said
Clients consistently commend Smarch for delivering exceptional value relative to their costs. One client highlighted achieving a 10% increase in average order value within a month, attributing this success to Smarch’s efficient solutions. Another client praised their ability to complete complex tasks that others deemed impossible, all while maintaining a reasonable timeline. Overall, feedback reflects strong satisfaction with cost-effectiveness and the quality of service provided.
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WeiChain Tech

Not yet reviewed

$5,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

50% Blockchain

25% Mobile App Development

25% Web Development

WeiChain Tech is a Blockchain company. The agency is based in Singapore, Singapore and Sofia, Bulgaria. Their services include Blockchain and Web Development.
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Sofia, Bulgaria

ulitsa "Oborishte" 5b
Sofia, Bulgaria 1504
10 - 15

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Infinite X

Not yet reviewed

$10,000+

Undisclosed

2 - 9

Sofia, Bulgaria

Services provided

100% Blockchain

Infinite X is a small Blockchain company. They focus on Blockchain and were founded in 2017.
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Fusion Software

Not yet reviewed

$10,000+

$50 - $99 / hr

10 - 49

Sofia, Bulgaria

Services provided

50% Blockchain

50% Custom Software Development

Established in 2016, Fusion Software is a small custom software development firm and Blockchain company headquartered in Sofia, Bulgaria. Their team offers Custom Software Development and
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GlobalizeIT

Not yet reviewed

$5,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

30% Blockchain

40% Web Development

30% Custom Software Development

GlobalizeIT, a web development company, is in Sofia, Bulgaria and Sofia, Bulgaria. They focus on Web Development and Custom Software Development and were founded in 2018.
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Codexio

Not yet reviewed

$1,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

20% Blockchain

40% Web Development

20% IT Strategy Consulting +1 service

20% Mobile App Development

Web development company Codexio was founded in 2017. In Sofia, Bulgaria, the team provides Web Development and Blockchain.
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ST6

Not yet reviewed

$25,000+

$100 - $149 / hr

10 - 49

Sofia, Bulgaria

Services provided

20% Blockchain

45% Web Development

25% Mobile App Development +2 services

5% Custom Software Development

5% Enterprise App Modernization

ST6, a web development firm, was founded in 2017. The firm specializes in Web Development and Mobile App Development.
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WispSoft

Not yet reviewed

$50,000+

$50 - $99 / hr

2 - 9

Sofia, Bulgaria

Services provided

30% Blockchain

30% Custom Software Development

20% CRM Consulting and SI +1 service

20% ERP Consulting and SI

Launched in 2021, WispSoft is a software development company. Based in Sofia, Bulgaria, the team focuses on Custom Software Development and Blockchain.
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Evolves Tech

5.0 2 reviews

$1,000+

< $25 / hr

50 - 249

Sofia, Bulgaria

Services provided

15% Blockchain

25% Custom Software Development

20% Digital Strategy +3 services

15% Blockchain Marketing

15% Web Development

10% Affiliate Marketing

Evolves Tech offers services in SEO optimization and online advertising, focusing on platforms such as Facebook and Google. Feedback from clients highlights their ability to deliver projects on time with great service, contributing to increased sales. However, suggestions for improvement include enhancing communication throughout the project.

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QaiWare

Not yet reviewed

$25,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

10% Blockchain

10% API Development

10% Application Management & Support +7 services

10% Custom Software Development

10% Enterprise App Modernization

10% IT Managed Services

10% IT Strategy Consulting

10% Mobile App Development

10% Other Application Development

10% Web Development

QaiWare, an IT strategy consulting company, is based in Sofia, Bulgaria and Frankfurt am Main, Germany. The team offers IT strategy consulting and IT managed services.
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Brave IT Consulting

Not yet reviewed

$1,000+

$50 - $99 / hr

50 - 249

Sofia, Bulgaria

Services provided

10% Blockchain

10% Business Consulting

10% Custom Software Development +8 services

10% E-Commerce Development

10% Enterprise App Modernization

10% IT Strategy Consulting

10% Mobile App Development

10% Other Application Development

10% Web Development

5% AI Development

5% IoT Development

Brave IT Consulting is a midsize custom software development firm. Established in 2019, the team specializes in Custom Software Development and Enterprise App Modernization.
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NCB Ltd

Not yet reviewed

$1,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

10% Blockchain

30% Custom Software Development

30% Web Development +2 services

20% Application Testing

10% IoT Development

Founded in 2013, NCB Ltd is a software development firm. Their team offers Custom Software Development and Web Development.
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AboveDev

Not yet reviewed

$5,000+

$50 - $99 / hr

2 - 9

Sofia, Bulgaria

Services provided

10% Blockchain

60% Web Development

30% AI Development

AboveDev is a web development firm founded in 2021. Based in Sofia, Bulgaria, the team focuses on Web Development and Artificial Intelligence.
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WebKings

Not yet reviewed

$1,000+

$25 - $49 / hr

2 - 9

Sofia, Bulgaria

Services provided

10% Blockchain

30% E-Commerce Development

30% Web Development +3 services

10% Custom Software Development

10% Low/No Code Development

10% Mobile App Development

WebKings is a small website development company. Founded in 2020, the team specializes in Web Development and E-Commerce Development.
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STARTEDIO

Not yet reviewed

$10,000+

$50 - $99 / hr

2 - 9

Sofia, Bulgaria

Services provided

10% Blockchain

60% Web Development

30% Mobile App Development

Website development company STARTEDIO is located in Sofia, Bulgaria. Their services include Web Development and Mobile App Development.
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Softrix

Not yet reviewed

$5,000+

$50 - $99 / hr

2 - 9

Sofia, Bulgaria

Services provided

20% Blockchain

20% AI Development

20% Graphic Design +2 services

20% Mobile App Development

20% Web Development

Softrix is a graphic design agency. Located in Sofia, Bulgaria, the agency offers Graphic Design and Web Development.
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Omicron Blockchain Solutions

Not yet reviewed

Undisclosed

Undisclosed

2 - 9

Sofia, Bulgaria

Services provided

100% Blockchain

Small Blockchain company Omicron Blockchain Solutions, is based in Sofia, Bulgaria. Their services include Blockchain.
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Process of Things - PoT

Not yet reviewed

Undisclosed

Undisclosed

2 - 9

Sofia, Bulgaria

Services provided

50% Blockchain

50% IoT Development

Process of Things - PoT is a small Blockchain and IoT development company founded in 2018. Their services include Blockchain and IoT development.
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At Clutch, we believe trust is the foundation of every business relationship. Our mission is to help buyers make confident, data-backed decisions informed by real client experiences.

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Clutch’s commitment to transparency is ongoing. We’re constantly refining our systems to protect the integrity of reviews and support you in finding the right agency.

Ability to deliver

Focus

Proven

Market Leaders

Emerging

Niche

Clutch Leaders Matrix

Rollover to see company insights or click a company below for more details.

1 LimeChain

2 Quanterall

3 INDUSTRIA

4 EntroSolutions

5 hack bg - Blockchain & DLT Solutions

6 SoCyber

7 Motion Software

8 MENA Software

9 Generic Soft

10 Smarch

A Clutch Leaders Matrix provides a broad view of the top-performing companies in a particular service or location. Each company featured in a Leaders Matrix is evaluated based on Focus and Ability to Deliver. The size of each circle indicates that company’s size.

By using verified reviews, focused service details, and real project data, the Leaders Matrix highlights companies that consistently deliver and stand out from the rest. Each company’s position is based on how well they focus on a service area and how consistently they deliver results, helping you make informed, confident decisions. Learn More

Focus (x-axis)

Focus accounts for a company’s specialization within a certain service.

Ability to Deliver (y-axis)

Ability to Deliver considers three criteria:

Client feedback and reviews
Work experience and previous projects
Market presence and reputation in the industry

List of the Top 10 Sofia Blockchain Development Companies

LimeChain

$5,000+

$50 - $99 / hr

50 - 249

Sofia, Bulgaria

Ability to deliver

32.4/40.0

17/20 Reviews

8.7/10 Clients & Experience

6.7/10 Market Presence

Service focus

70% Blockchain

30% Other

View Profile Visit Website
Quanterall

$50,000+

$50 - $99 / hr

50 - 249

Sofia, Bulgaria

Ability to deliver

33.5/40.0

16.2/20 Reviews

10/10 Clients & Experience

7.2/10 Market Presence

Service focus

30% Blockchain

70% Other

View Profile Visit Website
INDUSTRIA

Undisclosed

Undisclosed

10 - 49

Sofia, Bulgaria

Ability to deliver

27.4/40.0

16.2/20 Reviews

5.7/10 Clients & Experience

5.5/10 Market Presence

Service focus

50% Blockchain

50% Other

View Profile Visit Website
EntroSolutions

$5,000+

$50 - $99 / hr

10 - 49

Sofia, Bulgaria

Ability to deliver

31.3/40.0

16/20 Reviews

9.6/10 Clients & Experience

5.7/10 Market Presence

Service focus

10% Blockchain

90% Other

View Profile Visit Website
hack bg - Blockchain & DLT Solutions

$5,000+

$50 - $99 / hr

10 - 49

Sofia, Bulgaria

Ability to deliver

21.5/40.0

16.2/20 Reviews

0/10 Clients & Experience

5.3/10 Market Presence

Service focus

80% Blockchain

20% Other

View Profile Visit Website
SoCyber

$1,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Ability to deliver

24.3/40.0

16.4/20 Reviews

2.3/10 Clients & Experience

5.7/10 Market Presence

Service focus

10% Blockchain

90% Other

View Profile Visit Website
Motion Software

Undisclosed

Undisclosed

50 - 249

Sofia, Bulgaria

Ability to deliver

21.5/40.0

16.2/20 Reviews

0/10 Clients & Experience

5.3/10 Market Presence

Service focus

20% Blockchain

80% Other

View Profile Visit Website
MENA Software

$5,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Ability to deliver

20.8/40.0

15.6/20 Reviews

0/10 Clients & Experience

5.2/10 Market Presence

Service focus

25% Blockchain

75% Other

View Profile Visit Website
Generic Soft

$10,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Ability to deliver

21.6/40.0

17/20 Reviews

0/10 Clients & Experience

4.6/10 Market Presence

Service focus

15% Blockchain

85% Other

View Profile Visit Website
Smarch

$5,000+

$100 - $149 / hr

10 - 49

Sofia, Bulgaria

Ability to deliver

21.1/40.0

16.2/20 Reviews

0/10 Clients & Experience

4.9/10 Market Presence

Service focus

10% Blockchain

90% Other

View Profile Visit Website
WeiChain Tech

$5,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Ability to deliver

10/40.0

0/20 Reviews

5.1/10 Clients & Experience

4.9/10 Market Presence

Service focus

50% Blockchain

50% Other

View Profile Visit Website
Infinite X

$10,000+

Undisclosed

2 - 9

Sofia, Bulgaria

Ability to deliver

6.5/40.0

0/20 Reviews

1.2/10 Clients & Experience

5.3/10 Market Presence

Service focus

100% Blockchain

View Profile Visit Website
Fusion Software

$10,000+

$50 - $99 / hr

10 - 49

Sofia, Bulgaria

Ability to deliver

4/40.0

0/20 Reviews

0/10 Clients & Experience

4/10 Market Presence

Service focus

50% Blockchain

50% Other

View Profile Visit Website
GlobalizeIT

$5,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Ability to deliver

4.6/40.0

0/20 Reviews

0/10 Clients & Experience

4.6/10 Market Presence

Service focus

30% Blockchain

70% Other

View Profile Visit Website
Codexio

$1,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Ability to deliver

5.8/40.0

0/20 Reviews

1.2/10 Clients & Experience

4.6/10 Market Presence

Service focus

20% Blockchain

80% Other

View Profile Visit Website
ST6

$25,000+

$100 - $149 / hr

10 - 49

Sofia, Bulgaria

Ability to deliver

5.5/40.0

0/20 Reviews

0/10 Clients & Experience

5.5/10 Market Presence

Service focus

20% Blockchain

80% Other

View Profile Visit Website
WispSoft

$50,000+

$50 - $99 / hr

2 - 9

Sofia, Bulgaria

Ability to deliver

4/40.0

0/20 Reviews

0/10 Clients & Experience

4/10 Market Presence

Service focus

30% Blockchain

70% Other

View Profile Visit Website
Evolves Tech

$1,000+

< $25 / hr

50 - 249

Sofia, Bulgaria

Ability to deliver

4.6/40.0

0/20 Reviews

0/10 Clients & Experience

4.6/10 Market Presence

Service focus

15% Blockchain

85% Other

View Profile Visit Website
QaiWare

$25,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Ability to deliver

5.2/40.0

0/20 Reviews

0/10 Clients & Experience

5.2/10 Market Presence

Service focus

10% Blockchain

90% Other

View Profile Visit Website
Brave IT Consulting

$1,000+

$50 - $99 / hr

50 - 249

Sofia, Bulgaria

Ability to deliver

4.6/40.0

0/20 Reviews

0/10 Clients & Experience

4.6/10 Market Presence

Service focus

10% Blockchain

90% Other

View Profile Visit Website
NCB Ltd

$1,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Ability to deliver

4.6/40.0

0/20 Reviews

0/10 Clients & Experience

4.6/10 Market Presence

Service focus

10% Blockchain

90% Other

View Profile Visit Website
AboveDev

$5,000+

$50 - $99 / hr

2 - 9

Sofia, Bulgaria

Ability to deliver

4/40.0

0/20 Reviews

0/10 Clients & Experience

4/10 Market Presence

Service focus

10% Blockchain

90% Other

View Profile Visit Website
WebKings

$1,000+

$25 - $49 / hr

2 - 9

Sofia, Bulgaria

Ability to deliver

4/40.0

0/20 Reviews

0/10 Clients & Experience

4/10 Market Presence

Service focus

10% Blockchain

90% Other

View Profile Visit Website
STARTEDIO

$10,000+

$50 - $99 / hr

2 - 9

Sofia, Bulgaria

Ability to deliver

4/40.0

0/20 Reviews

0/10 Clients & Experience

4/10 Market Presence

Service focus

10% Blockchain

90% Other

View Profile Visit Website
Softrix

$5,000+

$50 - $99 / hr

2 - 9

Sofia, Bulgaria

Ability to deliver

4/40.0

0/20 Reviews

0/10 Clients & Experience

4/10 Market Presence

Service focus

20% Blockchain

80% Other

View Profile Visit Website

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