Top JavaScript Developers
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Featured
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$5,000+$25 - $49 / hr50 - 249London, EnglandServices provided
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See all 89 projectsDigis, a Fiverr company (NYSE: FVRR), specializes in Web Development, providing comprehensive services such as Front-End Development, Back-End Development, and Custom Website Development. Their reviews indicate a 100% satisfaction rate, highlighting their strong project management, technical expertise, and clear communication. Approximately 70% of reviewers emphasize their seamless integration into teams and high-quality deliverables.
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$1,000+< $25 / hr50 - 249Indore, India
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See all 2 projectsLean Artists is a mobile app development company that specializes in creating Android and iOS applications. Their overall feedback is highly positive, with customers praising their ability to deliver quality products promptly and efficiently. Approximately 100% of reviewers express satisfaction with their communication and project management skills, noting their use of WhatsApp and email for consistent updates.
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$1,000+$25 - $49 / hrFreelancer
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See all 3 projectsSadik Shaikh is a web development company specializing in custom website development, evidenced by their hands-on approach and efficient project management. With 100% positive feedback, clients commend their ability to deliver projects ahead of schedule and their consistent problem-solving support.
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$10,000+$25 - $49 / hr50 - 249Dublin, Ireland
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See all 3 projectsCapaciteam is a web development company specializing in custom website development with expertise in both front-end and back-end development using WordPress. They have a 100% positive feedback rate, with clients praising their technical proficiency and customer-centric approach. Reviewers frequently highlight their proactive communication, flexibility, and commitment to delivering high-quality projects within tight timelines.
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$10,000+$50 - $99 / hr50 - 249München, Germany
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See all 5 projectsAterise is a software development and IT consulting company specializing in financial solutions and digital products. Across the reviews, clients praised Aterise for their on-time delivery and strong communication skills. The company is commended for their quality work, cost-effectiveness, and adaptability to project needs. Notably, 100% of reviewers were impressed with their professionalism and execution, with no areas marked for improvement.
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$5,000+$25 - $49 / hr10 - 49Melbourne, Australia
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See all 2 projectsUpscalix is a web development company specializing in Website Development and Web Application Development. Feedback is consistently positive, highlighting their effective project management and timely delivery, with 100% of reviewers noting satisfaction with project outcomes. Clients report significant improvements, such as a 50% increase in website interactivity and a 70% rise in new job bookings.
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$5,000+$25 - $49 / hr2 - 9
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See all 4 projectsTantrija Enterprises is a web development company known for its expertise in Website Development and Web Design. With approximately 85% positive feedback, clients commend their responsive communication and technical prowess. While clients appreciate their strong design skills and project management, some suggest improvements in development speed.
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$5,000+$25 - $49 / hr10 - 49Santiago de Querétaro, Mexico
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See all 5 projectsBrounie is a web development company specializing in custom website development, web design, and web application development. With 100% positive feedback from reviewers, they are praised for their proactive communication, timely delivery, and innovative solutions. Clients appreciate their ability to adapt to unique project needs and the quality of their deliverables, resulting in increased website traffic and improved user experience.
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$50,000+$50 - $99 / hr250 - 999
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See all 2 projectsFacilité Informatique Canada inc. is a web development company specializing in full-stack web development and web application development. Their collaboration with the National Bank of Canada highlights their capability to manage complex projects, although there is room for improvement in software engineering practices. Approximately 85% of the feedback is positive, emphasizing their cost-effectiveness and project management skills.
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$5,000+$50 - $99 / hr10 - 49București, Romania
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See all 4 projectsZONKWAVE is a web development company specializing in custom website development and web application development with a focus on advanced WordPress CMS. Their services have been highly appreciated, with 100% of reviews noting their responsive communication and innovative problem-solving. Clients consistently praise their ability to increase website traffic and improve design aesthetics, reflecting an increase in revenue and user engagement.
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$50,000+$200 - $300 / hr10 - 49New York, NY
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See all 1 projectsBlenderbox is a web development company known for its exceptional project management and dedication from senior leadership. They excel in creating user-friendly, mobile-first website designs, as evidenced by positive user feedback and increased web traffic. Approximately 100% of the feedback highlights their professionalism, attention to detail, and strong leadership as standout qualities.
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$1,000+< $25 / hr2 - 9
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See all 12 projectsWebperts is a web development company specializing in custom website development, web design, and online development. Across their reviews, 100% of clients express satisfaction, highlighting their excellent communication, responsiveness, and ability to deliver complex projects such as customizable online systems and optimized websites. Clients appreciate their understanding of project needs and timely completion without requests for extensions.
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$5,000+$25 - $49 / hr50 - 249Surat, India
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See all 5 projectsProlance IT is a web development company specializing in both front-end and back-end development, offering services such as custom website development and full-stack web development. The company is highly praised for its professionalism and timely delivery, with 100% of the reviews highlighting their responsiveness and ability to meet deadlines, making them a reliable partner for complex projects.
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$10,000+$50 - $99 / hr10 - 49Singapore
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See all 4 projectsPengYi Labs is a UI/UX design company known for its exceptional responsiveness and communication skills, praised by 100% of reviewers. Specializing in creating UI mockups, wireframes, and app designs, they consistently deliver high-quality work on time, with no significant areas for improvement noted. Their adaptability and ability to integrate into client teams have contributed to successful project outcomes across various industries.
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$1,000+< $25 / hr10 - 49Ahmedabad, India
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See all 1 projectsExpoders Solutions is a software development company specializing in project management systems. They have received overwhelmingly positive feedback, with 100% of clients praising their cost-effectiveness and reliability, and their system achieving over 99% reliability. Reviewers consistently highlight their efficiency, attention to detail, and strong communication skills, with a notable emphasis on affordability and trustworthiness.
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$5,000+$25 - $49 / hr10 - 49Lahore, Pakistan
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See all 2 projectsSWAAM Tech is a web development company known for its comprehensive Website Development and Web Programming services. Clients appreciate their timely deliverables, with 100% of reviewers highlighting their effective communication and ability to understand business needs. The company's expertise ensures projects are well-managed and align with client objectives.
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$1,000+< $25 / hr10 - 49
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See all 2 projectsDeerada is a web development company known for delivering high-quality, custom website development services. Their clientele appreciates their unique web design skills and efficient project management, with 100% of reviewers highlighting their timeliness and quality work. Deerada specializes in creating corporate sites that are both visually appealing and user-friendly, ensuring comprehensive client satisfaction.
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$50,000+$50 - $99 / hr10 - 49Cluj-Napoca, Romania
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See all 1 projectsDood Software is a web development company specializing in full-stack web development and web application development. With a team composed mainly of experienced senior developers, they are praised for their professionalism, innovative technical solutions, and effective project management. Over 90% of the feedback highlights their ability to meet deadlines and deliver high-quality results, making them a reliable partner for large-scale projects.
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$10,000+$50 - $99 / hr2 - 9Cluj-Napoca, Romania
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See all 2 projectsThe Big Byte is a software development company known for its expertise in handling complex projects and delivering high-quality software solutions. Clients appreciate their ability to quickly understand requirements and meet project objectives with 100% satisfaction in quality, budget, and timeline. Approximately 50% of reviewers highlight their excellent project management skills, though some suggest a balance is needed to prevent overemphasis.
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$1,000+$25 - $49 / hr10 - 49Ghaziabad, India
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See all 2 projectsTechtonic Enterprises Pvt. Ltd. is a web development company specializing in full-stack web development, custom website development, and web application development. Their reviews highlight a 100% positive feedback rate, with clients praising their technical expertise, client-centric approach, and proactive solutions, resulting in enhanced online presence and user engagement. Notably, 40% of reviewers emphasize their impressive project management and timely delivery.
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$25,000+$50 - $99 / hr10 - 49Kraków, Poland
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See all 22 projectsUltimate Systems is a dynamic web development company specializing in custom website development, web application development, and full-stack web development services. Their reviews reflect a consistently high level of client satisfaction, with 100% positive feedback highlighting their exemplary project management, technical expertise, and ability to deliver on time. Clients frequently commend their effective communication and flexibility in adapting to project needs.
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$25,000+$25 - $49 / hr50 - 249
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See all 12 projectsQubit Labs is a web development company specializing in back-end and front-end development, serving as an extension of internal teams. The company is praised for its agility, swift communication, and ability to quickly provide quality candidates, with 100% of reviewers noting these strengths. While a growing company, minor legal and financial processing delays were noted but have been resolved.
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$5,000+$25 - $49 / hr10 - 49Vinnytsia, Ukraine
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See all 3 projectsEvenmore is a web development company specializing in front-end development, with expertise in transitioning frameworks and managing complex projects in sectors like crypto and finance. The reviews highlight their top-quality deliverables and quick problem-solving skills. Impressively, 100% of the feedback reflects satisfaction with no noted areas for improvement.
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$5,000+< $25 / hr10 - 49Karachi, Pakistan
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See all 2 projectsPrimech Agency is a web development company specializing in UI/UX design and full-stack web development services. They consistently deliver projects on time and within budget, with 100% of reviewers praising their technical skills and proactive communication. While the overall feedback is highly positive, 20% suggest more frequent project updates for improved visibility.
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$1,000+$50 - $99 / hr2 - 9
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See all 1 projectsEmpuls3 is a full-stack web development company specializing in custom website development, web design, and digital marketing solutions. They consistently exceed client expectations, as evidenced by 100% positive feedback, with clients highlighting their professionalism, effective project management, and attention to detail. Notably, 100% of reviewers mentioned significant improvements in their digital marketing presence and client lead generation after collaborating with Empuls3.
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$5,000+$25 - $49 / hr10 - 49Warszawa, Poland
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See all 3 projectsMaxyLogic is a software development company specializing in mobile app development, with expertise in Flutter and native Android frameworks. Across their reviews, 100% of clients mentioned their strong communication skills, while 66% noted their adeptness at project management. Clients appreciate their ability to meet deadlines and deliver quality work, though some suggest improvements in the onboarding process and strategic foresight.
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$25,000+$50 - $99 / hr10 - 49Buenos Aires, Argentina
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See all 3 projectsIMPRONTA IT is a software development company specializing in the development, modeling, and updating of GIS solutions. Reviews highlight their expertise in Web Programming and Custom Website Development, with a strong focus on user satisfaction. They are commended for delivering impactful applications and seamless integration with other platforms, though some suggest improving documentation. Overall, feedback is predominantly positive.
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$5,000+$25 - $49 / hr10 - 49Poznań, Poland
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See all 2 projectsinnovAgile is a software development company that excels in creating Cloud-based systems and offering software development support, particularly for API-first platforms. Approximately 100% of reviewers commend their high-quality work and responsiveness. Clients appreciate their professionalism and adaptability, though improvement in design aesthetics is suggested. Overall, innovAgile is recognized for its commitment to meeting client needs and maintaining efficient communication.
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$10,000+$25 - $49 / hr10 - 49Bucha, Ukraine
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See all 2 projectsFuture Proof Technology is a technology consulting and software development firm known for its exceptional project management and technical expertise. The company has received 100% positive feedback, with clients praising their communication, dedication, and ability to deliver high-quality solutions on time. Approximately 50% of reviewers highlight their proactive approach and strategic partnership value.
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$5,000+$25 - $49 / hr10 - 49Newcastle, Ireland
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See all 1 projectsDMC Consultancy is a web development company known for creating custom website solutions and handling web programming projects. With 100% positive feedback in reviews, clients commend their professionalism and ability to meet timelines effectively. Their work, including logo design and web development, receives significant praise for quality and impact.
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Undisclosed$50 - $99 / hr10 - 49Karlsruhe, Germany
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See all 4 projectsStudio Present is a web development company specializing in custom website development and web design services. Their clients frequently praise their responsiveness, openness to new ideas, and expertise in web design. Reviews highlight a 97% increase in average session time for Boss Caffe, demonstrating significant positive impact, with no notable negative feedback observed. Studio Present effectively manages projects with transparent communication and attention to detail.
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$10,000+$50 - $99 / hr10 - 49Sacramento, CA
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See all 3 projectsDr Developers is a web development company renowned for its expertise in Website Development and Custom Website Development. With 100% positive feedback, clients commend their professionalism, creativity, and the young, energetic team. Reviewers highlight their effective project management and impressive deliverables, though some suggest on-site staff training improvements.
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$1,000+$50 - $99 / hr2 - 9
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See all 2 projectsProject Rebel, operating under the name Rebel WordPress, is a web development company specializing in creating custom websites that reflect clients’ visions while allowing for future flexibility. The feedback highlights the team's professionalism, responsiveness, and ability to meet client needs, with 100% of reviews emphasizing their unique, client-centered approach and effective communication. However, affordability can be a concern for new businesses.
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$1,000+< $25 / hr50 - 249Sahibzada Ajit Singh Nagar, India
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See all 3 projectsDigisoft Solution is a web development company that specializes in custom web development and web application development. The company consistently receives positive feedback for its technical capabilities and responsiveness, with 100% of reviewers highlighting their timely delivery and effective communication. Clients have expressed satisfaction with the quality of their web development services.
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$1,000+$25 - $49 / hr2 - 9Marrakech, Morocco
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See all 1 projectsELBAHI.NET is a comprehensive web development company specializing in Website Development, Mobile Application Development, and UI/UX Design. The company's clients report a high level of satisfaction, with 100% of reviews highlighting their impressive design skills and client engagement. ELBAHI.NET's work has significantly increased web traffic, demonstrating their effectiveness in delivering quality online development solutions.
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$1,000+$25 - $49 / hr10 - 49
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See all 4 projectsVyzion Innovations is a technology solutions provider specializing in web and mobile app development. The company is highly praised for its effective project management, transparent communication, and commitment to client vision, with 100% of reviews highlighting their punctuality and problem-solving capabilities. Clients have reported significant achievements, such as early project delivery and substantial user growth.
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$10,000+$25 - $49 / hr50 - 249Wixom, MI
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See all 2 projects4-Serv Solutions Inc is a web development company specializing in custom website development and web application development. Their clients commend their ability to deliver projects efficiently, with 100% of reviews highlighting their expertise in building dynamic and scalable applications. Reviewers frequently note their effective communication and collaboration, making them a reliable partner for complex web programming needs.
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$1,000+$100 - $149 / hr2 - 9
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See all 1 projectstrustmarketing.pl is a web development company known for its expertise in website design and custom website development. With 100% positive feedback, reviewers highlight their effective communication, professional workflow, and innovative solutions. Collaborators praised their thorough project documentation, which facilitated seamless design implementation.
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$1,000+$25 - $49 / hr2 - 9Khmelnytskyi, Ukraine
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See all 1 projectsIvory Web Studio is a custom WordPress development company praised for its superior design sensibility and responsiveness. Offering design and website updates, they have successfully increased client visits or conversions by at least 50%. Reviewers highlight their effective communication and adaptability, with minimal criticism noted, reflecting a largely positive customer experience.
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$25,000+$25 - $49 / hr10 - 49Sfax, Tunisia
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See all 1 projectsZETA-BOX is a web development company specializing in custom website development and web application development. With a focus on integrating Dealer Management Systems and implementing automated marketing tools, they have received overwhelmingly positive feedback, with over 90% of reviewers praising their technical expertise and effective project management. Their structured approach and ability to deliver robust, scalable solutions are consistently highlighted.
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$1,000+$25 - $49 / hr2 - 9New Delhi, India
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See all 5 projectseClick nTech is a web development company renowned for its expertise in Website Development and Web Design. It consistently receives positive feedback, with 100% of reviewers praising its reliability, responsiveness, and detailed approach to web design. Clients commend the company for delivering projects on time and providing impressive communication, with all reviews reflecting satisfaction.
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$10,000+$100 - $149 / hr10 - 49Austin, TX
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See all 8 projectsCodesmen LLC is a web development company that specializes in creating custom platforms and digital marketplaces. With a strong focus on full-stack web development, they have garnered positive feedback from clients, with approximately 100% praising their responsiveness, adaptability, and quality. Clients frequently commend their project management skills and ability to exceed expectations in design and functionality.
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$10,000+$25 - $49 / hr50 - 249Bellevue, WA
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See all 1 projectsVirtuosity Consulting is a consultancy firm specializing in providing program managers and developers to streamline release processes for enterprises. The company receives overwhelmingly positive feedback, with clients highlighting their ownership of projects, flexibility, and seamless integration as an extension of the team. Nearly all reviewers emphasize their excellent service quality and adaptability to changing demands.
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$1,000+< $25 / hr2 - 9Ahmedabad, India
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See all 11 projectsHashtag Developer is a web development company specializing in custom website development, web design, and full-stack web development. They consistently deliver projects on time and within budget, with 100% of reviews highlighting their effective communication and understanding of client needs. Their professionalism and ability to exceed expectations are frequently praised, although some clients suggest expanding their service offerings.
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$5,000+$25 - $49 / hr50 - 249
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See all 3 projectsWEB SHINE TECH is a proficient web development company specializing in web design and custom website development. With 100% positive feedback, clients praise their quick response rates, professionalism, and effective project management. While their services significantly impact client businesses, one suggested improvement is to modernize the website design.
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$1,000+< $25 / hr10 - 49Liverpool, Australia
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See all 2 projectsDigitalrooar specializes in Website Development, Web Design, and digital marketing services. Clients commend their impressive website designs, effective project management, and the positive impact on business outcomes, such as increased sales and lead generation. Their knowledgeable and responsive team consistently delivers budget-friendly solutions tailored to clients' needs.
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$10,000+$50 - $99 / hr10 - 49
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See all 2 projectsSather Development is a web development company specializing in custom website development, web design, and conversion rate optimization. The reviews highlight an impressive 18% increase in onsite conversions and a dramatic reduction in site load time from 6.7 to 1.4 seconds. Clients appreciate their agile project management and prompt communication, with no negative feedback mentioned.
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Undisclosed$25 - $49 / hr10 - 49Barranquilla, Colombia
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See all 9 projectsMuto Digital Studio is a web development company specializing in website creation, design, and technical support. The company receives overwhelmingly positive feedback, with 100% of reviewers praising their timely delivery, professionalism, and ability to align with clients' needs. Clients commend their impressive creativity, effective communication, and excellent value for cost, making Muto Digital Studio a dependable choice for custom website development and full-stack web development projects.
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$5,000+$50 - $99 / hr2 - 9
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See all 16 projectsDigiAlps LTD is a proficient web development company excelling in custom website development, web application development, and web design. The firm garners positive feedback, with 100% of reviewers highlighting their professionalism, punctuality, and effective communication. Their ability to deliver unique, customized web solutions promptly stands out, making them a preferred choice for clients seeking tailored web development services.
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$5,000+$25 - $49 / hr10 - 49
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See all 4 projectsINCOAlliance is a versatile software development company specializing in diverse technology solutions, including frontend and backend development, QA services, and mobile app development. Reviews highlight their impressive project management skills, technical expertise, and broad skill set, with 100% of reviewers noting their professionalism and efficiency. Clients consistently commend their exceptional ability to meet diverse project needs.
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$1,000+$100 - $149 / hr2 - 9St. Louis, MO
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See all 3 projectsPC40 Interactive is a web application development company specializing in custom website development with expertise in PHP and WordPress. The reviews highlight their impressive project management skills and effective communication, with 100% positive feedback. Clients appreciate their responsiveness and adherence to project plans, making them a reliable partner for web development needs.
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List of the Top 15 JavaScript Development Companies
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$25,000+$50 - $99 / hr50 - 249Kraków, Poland
Ability to deliver
39.9/40.020/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
70% Web Development50% JavaScript30% Other -
$75,000+$100 - $149 / hr50 - 249Vancouver, Canada
Ability to deliver
39.7/40.020/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
90% Web Development50% JavaScript10% Other -
$50,000+$50 - $99 / hr50 - 249Gliwice, Poland
Ability to deliver
39.5/40.019.6/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
45% Web Development75% JavaScript55% Other -
$10,000+< $25 / hr250 - 999Thiruvananthapuram, India
Ability to deliver
38.5/40.019.2/20 Reviews10/10 Clients & Experience9.3/10 Market PresenceService focus
50% Web Development50% JavaScript50% Other -
$25,000+$50 - $99 / hr50 - 249Gliwice, Poland
Ability to deliver
39.8/40.020/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
40% Web Development60% JavaScript60% Other -
$10,000+$50 - $99 / hr50 - 249Montevideo, Uruguay
Ability to deliver
39.5/40.020/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
50% Web Development35% JavaScript50% Other -
$10,000+Undisclosed50 - 249San Francisco, CA
Ability to deliver
38.7/40.019.4/20 Reviews9.6/10 Clients & Experience9.7/10 Market PresenceService focus
40% Web Development50% JavaScript60% Other -
$25,000+< $25 / hr250 - 999Ahmedabad, India
Ability to deliver
39.7/40.020/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
65% Web Development20% JavaScript35% Other -
$10,000+$50 - $99 / hr50 - 249Kuala Lumpur, Malaysia
Ability to deliver
39.3/40.020/20 Reviews10/10 Clients & Experience9.3/10 Market PresenceService focus
30% Web Development70% JavaScript70% Other -
$5,000+$25 - $49 / hr50 - 249L'viv, Ukraine
Ability to deliver
36.5/40.017.6/20 Reviews10/10 Clients & Experience8.9/10 Market PresenceService focus
70% Web Development50% JavaScript30% Other -
$25,000+$25 - $49 / hr50 - 249Newark, DE
Ability to deliver
39.8/40.019.8/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
40% Web Development35% JavaScript60% Other -
$5,000+$50 - $99 / hr50 - 249Chicago, IL
Ability to deliver
39.7/40.020/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
35% Web Development40% JavaScript65% Other -
$10,000+$25 - $49 / hr250 - 999San Francisco, CA
Ability to deliver
39.9/40.020/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
15% Web Development40% JavaScript85% Other -
$25,000+$25 - $49 / hr50 - 249L'viv, Ukraine
Ability to deliver
37.6/40.018.6/20 Reviews10/10 Clients & Experience9/10 Market PresenceService focus
40% Web Development50% JavaScript60% Other -
$50,000+$25 - $49 / hr50 - 249Kharkiv, Ukraine
Ability to deliver
36.8/40.017/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
45% Web Development50% JavaScript55% Other -
$10,000+< $25 / hr250 - 999Kolkata, India
Ability to deliver
36.7/40.019.4/20 Reviews9/10 Clients & Experience8.4/10 Market PresenceService focus
35% Web Development30% JavaScript65% Other -
$50,000+$100 - $149 / hr1,000 - 9,999San Francisco, CA
Ability to deliver
38.7/40.018.8/20 Reviews9.9/10 Clients & Experience10/10 Market PresenceService focus
15% Web Development25% JavaScript85% Other -
$1,000+< $25 / hr250 - 999Walpole, MA
Ability to deliver
35.9/40.016.2/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
40% Web Development35% JavaScript60% Other -
$50,000+$50 - $99 / hr1,000 - 9,999New York, NY
Ability to deliver
39.8/40.020/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
10% Web Development25% JavaScript90% Other -
$5,000+< $25 / hr50 - 249Ahmedabad, India
Ability to deliver
36.3/40.016.6/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
60% Web Development45% JavaScript40% Other -
$10,000+< $25 / hr250 - 999Hanoi, Vietnam
Ability to deliver
38.7/40.019.2/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
30% Web Development21% JavaScript70% Other -
$10,000+$25 - $49 / hr1,000 - 9,999Plano, TX
Ability to deliver
36.9/40.017.2/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
20% Web Development25% JavaScript80% Other -
$10,000+$50 - $99 / hr250 - 999Marlborough, MA
Ability to deliver
38.7/40.019/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
25% Web Development25% JavaScript75% Other -
$100,000+$25 - $49 / hr250 - 999Cebu City, Philippines
Ability to deliver
38.7/40.020/20 Reviews10/10 Clients & Experience8.7/10 Market PresenceService focus
30% Web Development20% JavaScript70% Other -
$10,000+$25 - $49 / hr250 - 999New York, NY
Ability to deliver
40/40.020/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
28% Web Development15% JavaScript72% Other -
$50,000+$150 - $199 / hr50 - 249Matlock, England
Ability to deliver
37.8/40.018/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
100% Web Development30% JavaScript -
$10,000+$50 - $99 / hr10 - 49Warszawa, Poland
Ability to deliver
37.3/40.018.2/20 Reviews10/10 Clients & Experience9.2/10 Market PresenceService focus
50% Web Development70% JavaScript50% Other -
$50,000+$50 - $99 / hr1,000 - 9,999L'viv, Ukraine
Ability to deliver
38/40.018.2/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
21% Web Development18% JavaScript79% Other -
$10,000+$50 - $99 / hr10 - 49Montevideo, Uruguay
Ability to deliver
38.3/40.019.4/20 Reviews10/10 Clients & Experience8.9/10 Market PresenceService focus
40% Web Development50% JavaScript60% Other -
$50,000+$150 - $199 / hr250 - 999Irvine, CA
Ability to deliver
36.2/40.016.2/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
30% Web Development30% JavaScript70% Other
Top JavaScript Development Agencies
A JavaScript development company designs, builds, and maintains software products that rely on JavaScript across the stack. Teams typically handle front-end interfaces (React, Vue, or Angular), back-end services (Node.js, Express, NestJS), and database integrations. They translate business requirements into clean, maintainable code, implement third-party APIs, optimize performance, and provide ongoing support or feature enhancements. For startups, they may act as a dedicated product team; for enterprises, they often augment in-house engineers to accelerate delivery.
Most agencies bundle multiple offerings so clients can access full product life-cycle support:
- Discovery workshops & technical consulting
- UI/UX design and prototyping
- Front-end SPA or PWA development
- Server-side development with Node.js or Deno
- API design, GraphQL, and microservices architecture
- QA automation & performance testing
- DevOps, CI/CD, and cloud deployment (AWS, Azure, GCP)
- Post-launch maintenance and feature sprints
Some firms specialize in niches such as ecommerce storefronts, real-time dashboards, or IoT applications built with JavaScript frameworks like Next.js or Svelte.
Clutch data shows project budgets range widely:
- MVP or small web app - $15,000–$50,000
- Mid-size product build - $50,000–$200,000
- Enterprise-grade platform - $200,000–$1M+ | Hourly rates usually fall between $50–$149 depending on agency location, seniority, and specialization. Expect higher rates for U.S.-based teams and advanced services like real-time streaming or complex integrations.
- Align expertise: Verify experience with your required stack (e.g., React Native, TypeScript, serverless).
- Review case studies: Look for measurable outcomes—load-time reductions, user growth, or revenue lifts.
- Check communication style: Agile ceremonies, dedicated Slack channels, and transparent ticket tracking are green flags.
- Validate cultural fit: Long-term projects thrive when collaboration styles and time zones mesh.
- Compare total cost of ownership: Factor in maintenance, future scalability, and licensing—not just upfront build fees.
Shortlist 3-5 agencies on Clutch, schedule discovery calls, and request project roadmaps before signing an agreement.
- Guaranteed timelines without discovery
- No access to source code repositories during the engagement
- Outdated tech stacks (e.g., jQuery-only solutions for modern SPAs)
- Low developer retention or high turnover
- Vague pricing models or hidden fees
If an agency dismisses code reviews, ignores testing, or refuses to provide client references, proceed with caution
- Which JavaScript frameworks do you specialize in, and why?
- Can you walk me through a recent project with similar complexity?
- How do you ensure code quality—linting, peer reviews, automated tests?
- What is your approach to scalability and performance optimization?
- How will we communicate and track progress (tools, meeting cadence)?
- Who owns the intellectual property and source code upon project completion?
Clear answers reveal an agency’s maturity, processes, and commitment to delivering long-term value.
A freelancer is ideal for small fixes or short-term enhancements, offering lower overhead and flexible hours. Agencies provide multidisciplinary teams including project managers, UI designers, and QA engineers capable of delivering end-to-end solutions and scaling resources quickly. While agencies cost more, they reduce single-point-of-failure risk and accelerate time-to-market for complex products. How do JavaScript firms measure ROI? Common KPIs include page-load speed improvements, conversion rate uplifts, reduced infrastructure costs after code optimization, and user engagement metrics (session duration, churn reduction). Firms often set baseline metrics during discovery and provide post-launch analytics dashboards to demonstrate value.
Common KPIs include page-load speed improvements, conversion rate uplifts, reduced infrastructure costs after code optimization, and user engagement metrics (session duration, churn reduction). Firms often set baseline metrics during discovery and provide post-launch analytics dashboards to demonstrate value.