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), is a web development firm specializing in full-stack and custom website development. Reviews consistently highlight their exceptional project management, technical expertise, and strong communication skills. Approximately 90% of reviewers commend their proactive and reliable service, resulting in improved project delivery times and increased user satisfaction across various web applications.
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$1,000+< $25 / hr10 - 49Jaipur, India
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See all 1 projectsSearcheverythings is a web development company specializing in comprehensive services, including web and mobile app development, server management, and custom website development. The overall feedback is overwhelmingly positive, with 100% of reviewers highlighting their excellent support and services, making them a highly recommended choice for online development projects.
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$5,000+$25 - $49 / hr10 - 49Bhopal, India
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See all 20 projectsFluttertop Studio is a web development company specializing in creating responsive and brand-aligned websites. The majority of their clients express satisfaction with their services, highlighting their excellence in project management and attentive communication. Specifically, 100% of reviewers emphasize the company's ability to deliver projects on time and meet client expectations through tailored solutions.
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$10,000+$50 - $99 / hr10 - 49Kyiv, Ukraine
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See all 2 projectsRcoded is a versatile development company specializing in mobile and full-stack solutions. Reviews highlight their expertise in developing robust, well-architected platforms across various technologies including iOS, Android, and IoT. With 100% of reviewers noting their professional communication and problem-solving skills, Rcoded is praised for efficiently managing complex projects and delivering successful, user-friendly applications.
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$5,000+$25 - $49 / hr50 - 249Gujranwala, Pakistan
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See all 5 projectsBrackets Private Limited is a web development company specializing in online platform creation, WebApp development, and custom website solutions. Reviews highlight their excellent project management, integrity, and responsiveness, with 100% positive feedback on their trustworthiness and adaptability. Clients commend their effective communication and timely delivery, although user experience testing could be enhanced.
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$10,000+$25 - $49 / hr2 - 9
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See all 1 projectsEndurantDevs is a web development company specializing in full-stack web and application development. Their reviews indicate a strong performance in project management, autonomy, and communication. The company was praised for understanding project context and delivering efficient solutions, with 100% of reviewers highlighting their effective communication and accountability. This led to successful project completions and subsequent company acquisitions.
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UndisclosedUndisclosed2 - 9Kuala Lumpur, Malaysia
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See all 1 projectsCal Studio Website Design is a web development company specializing in custom website development and web design. Their clients appreciate their ability to deliver well-designed, user-friendly websites, as evidenced by positive feedback on user engagement and navigation. The client testimonials reflect complete satisfaction with their services, with no areas identified for improvement.
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$10,000+$100 - $149 / hr10 - 49Birmingham, England
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See all 3 projectsFast Fwd Multimedia Ltd. is a web development company specializing in custom website development and web application development. Their reviews consistently highlight their clear project management and adaptability. With 100% positive feedback, clients appreciate their understanding, responsiveness, and proactive approach to improving and supporting projects.
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$1,000+< $25 / hr10 - 49Ahmedabad, India
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See all 1 projectsAgreem Technologies is a web development company specializing in website updates and server transfers. Their services are highly rated, with 100% of reviewers praising their professionalism, timeliness, and excellent communication. Clients particularly appreciate their ability to deliver quality work at a budget-friendly price.
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$10,000+< $25 / hr10 - 49Chandigarh, India
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See all 4 projectsSnabbTech is a web and mobile app development company recognized for its alignment with client values and dedication to business outcomes. Approximately 80% of the feedback highlights timely delivery and solution-oriented service, while some suggest improvements in early project planning and testing. Their strong culture fit and effective communication are frequently commended by clients.
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$1,000+$25 - $49 / hrFreelancerLondon, England
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See all 2 projectsLK agency is a web development company specializing in custom website development and web application development. Reviews highlight their exceptional project management, with a 100% positive feedback rate, noting their ability to understand client needs and deliver on time. Clients appreciate their personal and professional service, with 50% mentioning Luke's adaptability and expertise in SEO and IT functionality.
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$1,000+$25 - $49 / hr50 - 249Karachi, Pakistan
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See all 8 projectsA2Z Creatorz is a proficient web development company specializing in website development, web programming, and full-stack web development. Analyzing their reviews, 100% of clients praised their professionalism, timely delivery, and technical expertise, with 80% highlighting their responsive project management. Clients noted their ability to meet business needs, though some suggest minor improvements in QC processes and proactive suggestions.
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$1,000+$100 - $149 / hrFreelancerNew Farm, Australia
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See all 1 projectsDaim Digital is a web development company specializing in Website Development and digital marketing services. Reviews indicate a positive experience, with 100% highlighting their excellent communication and ability to meet client expectations, especially in creating user-friendly sites. Clients appreciate their professional approach and aesthetic adherence, with no noted areas for improvement.
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$10,000+$100 - $149 / hr50 - 249Surry Hills, Australia
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See all 1 projects4mation Technologies is a web development company specializing in website migration and design, particularly onto platforms like Shopify. The company received predominantly positive feedback, with clients noting significant improvements in conversion rates and user experience. Customers appreciated their effective communication and adherence to timelines, with 100% of reviewers highlighting the team's supportiveness and commitment to client goals.
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$1,000+$25 - $49 / hr2 - 9Kolhapur, India
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See all 4 projectsPlanway is a web development company specializing in Webflow development, offering services such as Web Design, Custom Website Development, and Front-End Development. Reviewers report a strong emphasis on timely delivery and high-quality communication. Around 100% of feedback highlights their technical skills and customer satisfaction, though one review suggests room for improvement in quality assurance checks pre-launch.
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$1,000+$25 - $49 / hr2 - 9Houston, TX
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See all 3 projectsTECHsan Media LLC is a web development company specializing in custom website development and responsive web design. According to their reviews, 100% of clients commend their flexibility and ability to handle multiple projects, though some note the need for improved deadline adherence. Overall, their expertise in DNS migration, SSL implementation, and SEO services is well-regarded.
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$10,000+$50 - $99 / hr2 - 9Surry Hills, Australia
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See all 6 projectsSCSS Consulting is a web development company specializing in full-stack and custom website development, with expertise in integrating platforms using technologies like Django CMS and Angular/NodeJS. Their clients consistently highlight their strong project management, responsiveness, and thorough understanding of complex requirements, with around 90% of reviewers mentioning these positive attributes. The company is praised for its ability to meet tight deadlines and maintain clear communication throughout projects.
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Undisclosed$100 - $149 / hr2 - 9
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See all 4 projectsZipBoss is a specialized eCommerce development company, offering tailored solutions to businesses seeking to enhance their online presence. Their expertise in custom programming and integration with platforms like iNet and Shopify is widely praised, with 100% of reviewers commending their exceptional service and technical acumen. ZipBoss is known for delivering projects on time and providing comprehensive support, making them a reliable partner for complex digital transformations.
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$5,000+$100 - $149 / hr2 - 9Aspang Markt, Austria
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See all 1 projectsMacherjek GmbH is a web development company specializing in web design, UI/UX optimization, and online development. Across their reviews, they have consistently demonstrated excellent project management, creative solutions, and technical expertise, with 100% of reviewers reporting successful outcomes and satisfaction with the results.
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$50,000+Undisclosed50 - 249Nashville, TN
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See all 5 projectsAcklen Avenue Custom Software Development is a comprehensive web development company known for its full-stack web development capabilities, including web programming, UI/UX development, and database management. Their reviews highlight a collaborative team approach and strong project management, with 100% positive feedback on their team dynamics and process efficiency. However, clients note the importance of clear communication and engagement for optimal results.
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$1,000+$100 - $149 / hr10 - 49Dallas, TX
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See all 5 projectsRise Local SEO is a web development company specializing in creating user-friendly and updated websites. They were praised for their effective project management and ability to portray clients' visions with ease, with 100% of reviewers highlighting the clarity and navigability of the final product. However, some feedback mentioned a need for more responsive communication via email.
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$5,000+$25 - $49 / hr50 - 249
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See all 2 projectsThe Webplant is a full-service Web Development company specializing in Custom Website Development and Web Application Development. The company receives positive feedback for its technical expertise and project management abilities, with 90% of clients reporting timely project completion. Clients commend The Webplant's proficiency in backend and design work, as well as its effective communication and problem-solving skills.
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$5,000+$50 - $99 / hr10 - 49
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See all 3 projectsChain.Reaction is a web development company specializing in custom website development, full-stack web development, and web application development. The reviews highlight their technical expertise and ability to deliver high-quality code, with approximately 90% of feedback indicating satisfaction with their development work. However, some reviewers noted room for improvement in project management and timesheet transparency.
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Undisclosed$25 - $49 / hr10 - 49Łódź, Poland
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See all 2 projectsBlue Brick is a software development company specializing in database implementation, mobile app development, and software integration. The feedback reflects a generally positive experience, with 80% of clients expressing satisfaction with their services, particularly appreciating their advanced code quality and creative solutions. Some criticisms include a lack of project management, which they have since addressed by hiring a project manager.
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$10,000+$50 - $99 / hr10 - 49
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See all 1 projectsTheBrain Software House is a software development company specializing in custom solutions such as Excel add-ins to enhance data management and access. Reviews highlight their effective communication, smooth project management, and high-quality deliverables, with 100% of comments noting improved business efficiencies. Some suggest that clearer delivery schedules would enhance their service.
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$1,000+$50 - $99 / hr2 - 9
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See all 1 projectsSarc Media Production is a website development company known for its expertise in creating aesthetic and functional e-commerce platforms. Reviews highlight their strong commitment to exceeding client expectations with a focus on user-friendly design and robust features. Approximately 90% of the feedback is positive, emphasizing their professionalism, timely delivery, and effective communication throughout projects.
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$1,000+< $25 / hr10 - 49
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See all 3 projectsSunlightsol Technologies is a web development company specializing in Custom Website Development, Web Design, and Full-Stack Web Development. Clients consistently praise their exceptional project management and innovative solutions, with 100% of reviewers noting timely delivery and effective communication. The company excels in enhancing user engagement, reducing bounce rates, and boosting visibility through strategic design and development initiatives.
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$10,000+$25 - $49 / hr10 - 49Miami, FL
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See all 10 projectsMayura Consultancy Services (MCS) is a web development company specializing in custom web application development, offering robust services that include full-stack development, UI/UX design, and comprehensive QA testing. With highly positive feedback, 100% of reviewers praise their efficient project management, technical expertise, and ability to deliver tailored solutions, often exceeding client expectations in terms of quality and responsiveness.
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$10,000+$150 - $199 / hr10 - 49Coventry, England
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See all 2 projectsImagePlus Ltd is a web development company that specializes in expanding B2B and B2C applications. Clients appreciate their fluid project management and effective communication, contributing to high customer satisfaction and brand awareness. Notably, 100% of reviewers praise their professionalism and knowledge, with no areas for improvement mentioned.
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$5,000+$25 - $49 / hr10 - 49Novi Sad, Serbia
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See all 1 projectsFragmant is a UI development and frontend design company with a focus on creative and out-of-the-box solutions. All reviews noted their effective communication and agile project management approach. While a few suggest room for improvement in promptness, 100% of the feedback highlights their distinct design capabilities and strong communication skills as standout attributes.
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$5,000+$25 - $49 / hr10 - 49
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See all 2 projectsXPikTech is a web development company known for its expertise in custom website development and web programming. According to reviews, 100% of clients praised their project management and timely delivery, with 50% highlighting the company's ability to adapt to changing project scopes effectively. While communication was initially challenging, improvements were noted with the inclusion of a project manager.
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$1,000+$25 - $49 / hr10 - 49Mar del Plata, Argentina
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See all 1 projectsImpulso RG is a Web Development company focusing on creating custom websites and managing social media. Reviews highlight their exceptional adaptability and effective communication, with 100% of feedback being positive regarding their project management and website development skills. Clients particularly appreciate their openness and superior web solutions, leading to significant growth in user engagement and sales.
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$5,000+$25 - $49 / hr2 - 9Warszawa, Poland
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See all 2 projectsVaya-Soft is a versatile web development company specializing in technical consultations and application development, with a strong focus on startups and custom solutions. With 100% positive feedback, clients praise their flexibility, timely delivery, and ability to align with client needs, making them an ideal partner for both small startups and large corporations.
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$50,000+$100 - $149 / hr2 - 9Dover, DE
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See all 5 projectsDesign Zilla is a web development company specializing in custom website development, UI/UX, and e-commerce solutions. With a 100% positive feedback rate, clients consistently praise their ability to blend creativity with functionality and their dedication to meeting project timelines. Approximately 80% of reviewers highlight their exceptional communication and collaboration skills, contributing to increased user engagement and brand recognition.
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$5,000+$25 - $49 / hr2 - 9Budapest, Hungary
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See all 3 projectsPK Agency is a web development company specializing in full-stack web development, custom website development, and web application development. Reviews indicate a mixed reputation, with 50% positive feedback highlighting their reliability and effective communication, and 50% negative feedback concerning uncompleted tasks and unresponsiveness post-payment. While some clients praise their problem-solving skills, others express dissatisfaction with their project completion and follow-through.
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$10,000+$25 - $49 / hr10 - 49
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See all 7 projectsFlycatch is a versatile web development company that excels in delivering custom web solutions, like web application development and front-end development, tailored to client needs. With a 100% positive feedback rate, reviewers consistently praise their timely project delivery, effective communication, and user-centric approach, highlighting their commitment to quality and stakeholder satisfaction.
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$1,000+$25 - $49 / hr10 - 49Ahmedabad, India
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See all 4 projectsNextsavy Technologies is a distinguished web development company known for its expertise in custom website development and e-commerce solutions. The firm has garnered 100% positive feedback, with clients praising their efficient project management, interactive web design, and proactive communication. Notably, 100% of reviewers commend their problem-solving skills and customer service, indicating a strong emphasis on client satisfaction.
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$1,000+$25 - $49 / hr10 - 49Ahmedabad, India
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See all 4 projectsHuptech Web Private Limited is a web development company highly praised for its custom website development, including full-stack web development and web design. With 100% positive feedback, clients commend their exceptional project management, attention to detail, and ability to align with business values, leading to impressive website aesthetics and effective online growth strategies.
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$5,000+$50 - $99 / hr50 - 249Kaatsheuvel, Netherlands
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See all 12 projectsIntoSoft BV is a web development company specializing in software and mobile app development, particularly for children's daycare systems. They have received overwhelmingly positive feedback, with 100% of reviewers expressing satisfaction with their services and praising their effective communication and teamwork. Clients highlight their strong project management skills and commendable customer relations.
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$10,000+Undisclosed10 - 49Melbourne, Australia
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See all 2 projectsExo Digital is a dynamic digital agency specializing in web design, branding, and UX/UI services. Consistently praised for their exceptional communication and professionalism, they have garnered 100% positive feedback in reviews. Notably, 50% of reviewers highlight the team's strong empathy and involvement in projects, including the direct involvement of their CEO, Robert, ensuring seamless collaboration and client satisfaction.
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$5,000+$25 - $49 / hr2 - 9London, England
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See all 7 projectsPixable is a web development company specializing in custom website development and online development solutions. With a 100% positive feedback rate, clients consistently laud their prompt communication, timely delivery, and effective project management. Approximately 75% of reviewers highlight Pixable's capacity to align with company values, while 50% emphasize their responsiveness and efficiency in completing projects.
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$1,000+$25 - $49 / hr10 - 49Warszawa, Poland
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See all 1 projectsAW PROJEKT Interactive Agency is a web development company specializing in Website Design and Development, SEO, and digital marketing. With 85% positive user feedback, clients praise their project management, timely delivery, and exceptional communication. Reviewers consistently highlight their flexibility, holistic approach, and ability to achieve measurable results such as increased traffic and social media engagement.
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$1,000+$50 - $99 / hrFreelancerWaterloo, Australia
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See all 3 projectsWeb V8 is a web development company specializing in Custom Website Development and Full-Stack Web Development. Clients consistently commend their ability to transform websites into modern, easily updatable platforms, with 100% of reviewers highlighting the team's effective communication and adherence to deadlines. Their open communication structure and technical prowess ensure client satisfaction, as reflected by overwhelmingly positive feedback.
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$1,000+$50 - $99 / hr50 - 249Jakarta, Indonesia
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See all 2 projectsIce House is a comprehensive software development company specializing in full-stack development for iOS, Android, and web applications. Across reviews, clients commend their high-quality development work and effective project management, with approximately 90% highlighting their professional service-oriented approach. While they are praised for their cost-effective global team, some reviewers suggest enhancing app metric analytics integration.
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$1,000+$50 - $99 / hr2 - 9
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See all 3 projectsRaleigh Digital is a web development company specializing in custom website development and SEO strategies. They significantly enhanced the online presence of a client’s restaurant through skillful web design and consistent project management. All feedback revealed a 100% satisfaction rate, highlighting their professionalism, courtesy, and knowledgeable approach.
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Undisclosed< $25 / hr50 - 249
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See all 2 projectsConzummate Tech is a skilled 3D CAD modeling and rendering company highly regarded for transforming 2D technical drawings into realistic 3D visuals. 100% of reviewers praised their attention to detail and high-quality outputs, although a faster revision cycle was suggested for improvement. Overall, clients appreciated their reliability, proactive communication, and cost-effective services.
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$1,000+$25 - $49 / hr10 - 49
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See all 2 projectsMANU:TEAM offers services in Website Development, Web Design, and Online Development. Reviews highlight their exceptional service, efficiency, and proactive communication. Clients praise their ability to transform prototypes into fully functional web applications, often exceeding expectations while meeting or surpassing deadlines.
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$50,000+$25 - $49 / hr10 - 49
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See all 3 projectsAhiho is a web development company specializing in custom website and web application development, including scalable CMS and front-end solutions. All reviewers highlighted their exceptional project management and communication, with 100% of feedback being positive. The company's commitment to customer satisfaction and attention to detail were consistently praised, making them a recommended choice for web projects.
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Undisclosed$50 - $99 / hr10 - 49Bristol , England
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See all 6 projectsAtomic Smash is a web development company specializing in creating custom websites, primarily using WordPress. Reviews indicate a strong focus on project management and effective communication, with 100% of clients praising their professionalism and responsiveness. Clients frequently highlight their ability to deliver projects on time and within budget, as well as their openness to client feedback and collaboration.
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$50,000+$50 - $99 / hr50 - 249Scottsdale, AZ
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See all 2 projectsGate6, Inc. is a web development company praised for its Full-Stack Web Development and Web Design services. With 100% positive feedback, clients commend their professionalism, creativity, and promptness, consistently exceeding expectations. Their ability to enhance client visions with technical expertise and attention to detail is highly valued, ensuring successful project outcomes.
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$1,000+< $25 / hr2 - 9
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See all 2 projectsClikwaves is a web development company specializing in website development, web application development, and custom website development. Their client reviews are overwhelmingly positive, highlighting their skill in transforming static websites into dynamic, animated ones. Approximately 100% of reviewers praise their transparency and effective communication, while 30% mention the enhanced workflow and efficiency from their delivered solutions.
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This data powers tools like the Leaders Matrix, which helps you compare agencies directly. Our research team curates rankings by weighing verified reviews most heavily, so the most trusted and experienced providers rise to the top.
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List of the Top 15 JavaScript Development Companies
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$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 -
$25,000+$50 - $99 / hr50 - 249Kraków, Poland
Ability to deliver
39.3/40.019.4/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
70% Web Development50% JavaScript30% Other -
$50,000+$50 - $99 / hr50 - 249Gliwice, Poland
Ability to deliver
39.3/40.019.4/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
45% Web Development75% JavaScript55% 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
38.5/40.019.2/20 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+$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 -
$5,000+$25 - $49 / hr50 - 249L'viv, Ukraine
Ability to deliver
36.3/40.017.4/20 Reviews10/10 Clients & Experience8.9/10 Market PresenceService focus
70% Web Development50% JavaScript30% 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 - 249Newark, DE
Ability to deliver
39.6/40.019.6/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
40% Web Development35% JavaScript60% Other -
$10,000+$50 - $99 / hr250 - 999Marlborough, MA
Ability to deliver
39.3/40.019.6/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
25% Web Development25% JavaScript75% 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 -
$50,000+$25 - $49 / hr50 - 249Kharkiv, Ukraine
Ability to deliver
36.4/40.016.6/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
45% Web Development50% JavaScript55% 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 -
$25,000+$25 - $49 / hr50 - 249L'viv, Ukraine
Ability to deliver
37/40.018/20 Reviews10/10 Clients & Experience9/10 Market PresenceService focus
40% Web Development50% JavaScript60% Other -
$50,000+$100 - $149 / hr1,000 - 9,999San Francisco, CA
Ability to deliver
38.3/40.018.4/20 Reviews9.9/10 Clients & Experience10/10 Market PresenceService focus
15% Web Development25% JavaScript85% 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 -
$10,000+$50 - $99 / hr10 - 49Warszawa, Poland
Ability to deliver
37.5/40.018.2/20 Reviews10/10 Clients & Experience9.3/10 Market PresenceService focus
50% Web Development70% JavaScript50% Other -
$10,000+$25 - $49 / hr1,000 - 9,999Plano, TX
Ability to deliver
36.5/40.016.8/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
20% Web Development25% JavaScript80% 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 -
$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 -
$50,000+$150 - $199 / hr50 - 249New York, NY
Ability to deliver
35.5/40.015.8/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
60% Web Development45% JavaScript40% Other -
$5,000+$50 - $99 / hr50 - 249Maribor, Slovenia
Ability to deliver
36.1/40.020/20 Reviews10/10 Clients & Experience6.1/10 Market PresenceService focus
40% Web Development100% JavaScript60% Other -
$50,000+$50 - $99 / hr1,000 - 9,999L'viv, Ukraine
Ability to deliver
37.6/40.017.8/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
21% Web Development18% JavaScript79% Other -
$25,000+$50 - $99 / hr50 - 249Poznań, Poland
Ability to deliver
40/40.020/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
50% Web Development10% JavaScript50% 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.