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 87 projectsDigis, a Fiverr company (NYSE: FVRR), is a web development firm offering comprehensive solutions in custom website development, full-stack web development, and web application development. With 100% positive feedback, clients commend their seamless integration into teams, high-quality deliverables, and responsiveness. Approximately 80% of reviews highlight their effective project management and communication, emphasizing their reliability and expertise in meeting project milestones.
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$5,000+$50 - $99 / hr10 - 49
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See all 6 projectsSwaileap is a full-stack web development company specializing in custom website development and web application development. The company is praised for its open communication, flexibility, and timely delivery, with 100% of reviewers highlighting their efficient project management and responsiveness. Swaileap is recognized for delivering good value for cost and successfully meeting project objectives.
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$5,000+< $25 / hr10 - 49Jaipur, India
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See all 1 projectsPM IT SOLUTION is a web development company excelling in Website Development and SEO services, particularly in the EdTech sector. Based on reviews, 100% of clients express satisfaction with their high-quality deliverables, timely project completion, and exceptional customer support. The company's expertise in both development and digital marketing is highly valued by clients.
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$50,000+$50 - $99 / hr10 - 49Budapest, Hungary
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See all 1 projectsKonstruktor Online is an IT development company specializing in both software and hardware solutions. The reviews highlight their comprehensive service offering, including user experience design and project management, with 100% of feedback being positive. Clients praise their ability to integrate complex systems and their innovative approach, though they note room for growth in maturity and response time.
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$5,000+$100 - $149 / hr2 - 9
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See all 1 projectsPixelPeople is a web design company renowned for delivering effective and fast WordPress websites tailored to client needs. Reviews highlight their excellent communication, with 100% mentioning prompt responses and satisfaction with the final product. Clients appreciate their competitive pricing and reliability, making them a trustworthy choice for web design projects.
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$1,000+$25 - $49 / hrFreelancerLahore, Pakistan
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See all 1 projectsMortis Labs is a web development company specializing in custom website development and web design. According to reviews, 100% of clients highlight their responsiveness and ability to drive high-quality traffic, resulting in increased e-commerce sales. Clients appreciate Mortis Labs for their excellent value and timely project delivery, with no notable areas for improvement mentioned.
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$5,000+$25 - $49 / hr10 - 49Ciudad Autónoma de Buenos Aires, Argentina
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See all 4 projectsAxioma IT Solutions is a web development company specializing in custom website development, web application development, and UI/UX design. Reviews indicate a strong positive reception, with 100% of clients highlighting their adaptive workflow and client comprehension. While there is room for improvement in delivery time, clients appreciate their value for cost and alignment with company values.
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$10,000+$25 - $49 / hr10 - 49Kharkiv, Ukraine
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See all 2 projectsFaifly, LLC is a full-stack web development company known for its flexibility and customer-centric approach. They consistently deliver quality work on time and within budget, with a 100% positive feedback rate from clients. Their expertise in both front-end and back-end development, along with their agile project management, is highly praised by clients.
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$5,000+$25 - $49 / hr50 - 249Noida, India
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See all 4 projectsVipra is a versatile software and mobile application development company, highly praised for its effective project management and excellent communication skills. They have developed solutions for a range of industries, consistently delivering projects on time and accommodating client requests efficiently. Approximately 90% of reviewers highlight their technical expertise and strong understanding of business needs, with few areas for improvement noted.
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$1,000+$25 - $49 / hr50 - 249
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See all 2 projectsEncircl LLC is a versatile digital solutions company specializing in email deliverability and web development. They have received positive feedback from clients, with a focus on flexibility and effective communication. Notably, 100% of reviewers highlighted their expertise and project success, with improvements in email engagement and enhanced online presence. However, in-person meetings were cited as an improvement area due to geographical constraints.
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$1,000+Undisclosed10 - 49
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See all 1 projectsENVAST is a web development company specializing in custom website development, web programming, and full-stack web development. With 100% positive feedback, clients commend their expertise, reactivity, and ability to deliver projects on time and within budget, highlighting perfect load speed and excellent user experience.
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$10,000+$100 - $149 / hr2 - 9Charleston, SC
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See all 14 projectsComplete Web is a website development company known for its expertise in Web Design, Custom Website Development, and Web Programming. Across multiple reviews, 100% of clients highlight their responsiveness, professionalism, and great value for cost. Approximately 75% of reviews commend their impressive project management and communication skills, while over 50% note their ability to deliver projects on time and within budget.
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$10,000+$25 - $49 / hr10 - 49Wilmington, DE
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See all 2 projects6senseHQ is a web development company known for its strong technical skills and innovative solutions. They specialize in website development, web design, and web application development. With an emphasis on timely project completion and excellent communication, 6senseHQ has positively impressed 100% of reviewers, highlighting their commitment to quality and effective project management. However, a minor area for improvement noted was in their branding presentation.
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$1,000+< $25 / hr10 - 49
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See all 2 projectsStriver Technosoft LLP is a mobile app development company known for offering high-quality, cost-effective solutions tailored to client needs. Their reviews highlight a 100% positive feedback rate, with clients praising their timely deliveries, responsiveness, and exceptional problem-solving skills, reflecting their expertise and experience in the industry.
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$1,000+$25 - $49 / hr10 - 49Rzeszów, Poland
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See all 1 projectsInvestimetric.io is a web development company specializing in custom website development and web application development, with a strong focus on back-end development. Their reviews reflect a high level of client satisfaction, with 100% positive feedback highlighting their expertise, flexibility, and effective project management. Clients particularly appreciate their innovative approach and ability to deliver projects on time and within budget.
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$1,000+< $25 / hr10 - 49Chandigarh, India
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See all 1 projectsCodeAI Labs Private Limited specializes in Web Development and Web Application Development, excelling particularly in MEAN stack technology. The company is praised for its quality and responsibility, with 100% positive feedback on their performance. While their expertise and project management are commendable, a noted area for improvement is unit testing.
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$10,000+$50 - $99 / hr2 - 9Chișinău, Moldova
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See all 3 projectsElysio (Out of Business) operated as a web development company, specializing in creating comprehensive online platforms and bespoke web solutions. The reviews consistently highlight their capability in full-stack web development, with a notable emphasis on designing user-friendly interfaces and robust back-end systems. Approximately 90% of reviewers appreciated Elysio's innovative approach and ability to exceed expectations, often transforming initial concepts into successful, widely praised web platforms.
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$1,000+$100 - $149 / hr2 - 9Los Angeles, CA
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See all 11 projectsNexeo, a distinguished web development company, excels in custom website development, full-stack web development, and web application development. With unanimous positive feedback, clients highlight Nexeo's high-quality work, responsiveness, and innovative approach to both front-end and back-end development. Approximately 100% of reviews praise their ability to deliver projects on time and their impressive project management skills.
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$50,000+Undisclosed2 - 9New York, NY
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See all 2 projectsNeoSkript is a web development company specializing in custom website development and web application development. They have earned positive feedback from clients, with 100% of reviewers highlighting their ability to enhance online presence and user engagement. Clients are impressed by NeoSkript's proactive communication and technical expertise, although there is room for improvement in initial onboarding and CMS training.
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$10,000+$50 - $99 / hr50 - 249Warszawa, Poland
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See all 5 projects3e Software House is a comprehensive software development company specializing in full-stack solutions, encompassing both backend and frontend development. The company is highly praised, with an impressive record of delivering projects on time and maintaining high service quality. Over 90% of the reviews highlight their technical expertise, proactive approach, and effective communication. They are frequently commended for their agile methodologies and ability to manage complex projects efficiently.
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$1,000+$100 - $149 / hr2 - 9
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See all 3 projectsINCORE Digital Agency is a professional web development and digital marketing firm, excelling in creating and managing websites and digital campaigns. Reviews highlight their expertise, responsiveness, and dedication to client success, with over 90% of clients noting significant business improvements. Approximately 70% attribute their business growth directly to INCORE's efforts, emphasizing their ability to adapt and innovate.
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$50,000+$50 - $99 / hr2 - 9Hollywood, FL
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See all 2 projectsRockinDev is a web development company specializing in advanced web technology and cloud engineering. They consistently deliver projects on time, with 100% of reviewers noting their technical expertise and strong project management. Their attention to detail and commitment to quality have led to increased client engagement and successful outcomes.
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$10,000+$25 - $49 / hr2 - 9Pazin, Croatia
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See all 1 projectsInstitute of Ideas and Inventions is a web development company that specializes in website development and online promotion. Clients have praised their professional execution, effective communication, and ability to visualize and realize project ideas, with 100% positive feedback. The team is noted for its responsiveness and approachability, though enhanced communication via video calls could improve remote collaboration.
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$10,000+$50 - $99 / hr2 - 9
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See all 2 projectsProdRocket is a strategic consulting firm specializing in product and marketing strategy for early-stage startups. Their clients commend their ability to clarify market positioning and develop targeted go-to-market plans, with 100% of reviewers highlighting their effective collaboration and innovative solutions. ProdRocket has been instrumental in launching products and achieving early adoption, with no areas for improvement mentioned.
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$10,000+$50 - $99 / hr10 - 49Zagreb, Croatia
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See all 6 projectsPerpetuum Mobile is a web development company specializing in custom website development, web application development, and e-commerce solutions using platforms like Magento and Drupal. Their expert team is praised for their quick understanding of client needs and excellent communication, with 100% of reviews highlighting satisfaction with their work. However, some clients suggest increasing staffing to enhance project speed.
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$5,000+< $25 / hr10 - 49Mohali, India
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See all 3 projectsNetqom Software Private Limited is a web development company specializing in creating and enhancing online platforms for diverse industries, including e-commerce, law enforcement services, and fashion retail. Approximately 90% of reviews highlight their strong project management skills, responsiveness, and ability to deliver professional, functional, and aesthetically appealing websites. While a few reviewers suggested improved flexibility in working hours, overall, clients appreciate their value and expertise.
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$5,000+< $25 / hr10 - 49Hanoi, Vietnam
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See all 1 projectsSiten Software Company is a management software provider specializing in utility services for sectors such as restaurants, homestays, and spas. Their clients report high satisfaction, with 100% of reviewers praising their project management capabilities, responsiveness, and innovative approach, highlighting their transformation of traditional management methods into modern, technology-driven solutions.
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$1,000+$25 - $49 / hr50 - 249Warszawa, Poland
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See all 5 projectsSoftvoya is a web development company specializing in custom website development and web application development. Reviews highlight the company's strong communication skills and efficient project management, with 100% of reviewers praising their ability to deliver complex architectures and high-quality, custom UI designs. While some feedback suggests room for improvement in testing procedures, the overall satisfaction with Softvoya's services is positive.
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$1,000+$25 - $49 / hr10 - 49
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See all 5 projectsBineks is a web development company specializing in full-stack web development, custom website development, and web application development. Reviewers consistently praise Bineks for their excellent communication skills, with 100% mentioning it positively. Clients appreciate their ability to manage projects efficiently, providing tailored solutions while being responsive and adaptive to needs.
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$1,000+$25 - $49 / hr10 - 49Accra, Ghana
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See all 5 projectsManifest Multimedia is a full-stack web development company specializing in custom website development and web application development. With a 90% positive feedback rate, clients praised their prompt response, excellent customer care, and ability to deliver quality work. Notable themes include their professional communication and project management, with recommendations highlighting their ability to meet client needs effectively.
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$5,000+$50 - $99 / hr2 - 9Port Harcourt, Nigeria
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See all 3 projectsBrela Formerly OptimizeSEO is a web design agency specializing in custom website development, particularly for renewable energy businesses. Feedback indicates a high level of customer satisfaction, with 100% of reviewers highlighting the firm's reliability and dedication. Clients note the agency's impressive workflow and fast response times, with projects delivered efficiently within set timelines.
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$1,000+$25 - $49 / hr10 - 49
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See all 1 projectseBase U.S. is a software development company specializing in creating image processing and web applications, particularly for the medical sector. Reviewers consistently highlight their high-quality software development skills, especially in digital imaging, and commend their ability to handle small-scale projects effectively. A notable 100% of reviews emphasize their reliable and skilled engineering team, despite its small size.
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$1,000+$25 - $49 / hr10 - 49
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See all 6 projectsAutuskey Private Limited is a web development company specializing in custom website development, front-end and back-end development, and full-stack web development. Across their reviews, clients consistently praise their responsiveness, project management, and ability to deliver tailored solutions on time. High ratings, budget-friendly pricing, and alignment with client values are frequently mentioned, with over 90% of reviews highlighting their commitment to understanding client needs and delivering innovative solutions.
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$5,000+$25 - $49 / hr10 - 49Gdańsk, Poland
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See all 2 projectsJMB Lab is a software development company praised for its high-quality service and effective project management. With a focus on technology solutions, they have consistently met deadlines and maintained excellent communication. Approximately 100% of reviewers highlight their professionalism, with no areas of improvement noted. Their expertise includes programming, quality assurance, and project management, contributing to improved product quality and predictable release schedules.
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$10,000+$50 - $99 / hr10 - 49Warszawa, Poland
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See all 2 projectsCodifive is a web development company specializing in custom website development and full-stack web development services. Reviews reveal that Codifive excels in delivering complex projects with a 100% positive feedback rate, highlighting their impressive project management, technical expertise, and ability to tailor solutions to client needs, resulting in successful outcomes for diverse clients.
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$5,000+Undisclosed2 - 9Varna, Bulgaria
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See all 2 projectsPowdi Studio is a web development company specializing in WordPress-based website development and back-end functionality. Known for their clear communication and structured approach, 100% of reviewers highlight their partnership-oriented project management style and ability to deliver high-quality results on time. Clients appreciate their responsiveness and the seamless functionality of their projects.
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$25,000+$150 - $199 / hr2 - 9
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See all 1 projectsAnon Consulting is a web development company specializing in designing and developing MVPs, particularly for health startups, using technologies like Ruby on Rails and Heroku Postgres. The reviews reflect a 100% positive sentiment, highlighting their professionalism, quick turnaround, and responsiveness, with 100% of reviewers impressed by the quality and efficiency of their deliverables.
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$1,000+$25 - $49 / hr10 - 49Yerevan, Armenia
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See all 7 projectsAlgorithm Solutions specializes in Website Development and Web Design, providing comprehensive online development services including responsive platforms with custom integrated functionalities. Reviews consistently highlight their attention to detail, strong project management, and effective communication. Clients are impressed by their commitment to clarity and their proactive support, ensuring project success and seamless operation. Algorithm Solutions is highly recommended for their professionalism and collaborative approach.
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$1,000+$25 - $49 / hr10 - 49Howrah, India
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See all 4 projectsBusiness Creative Designs is a web development company specializing in custom website development and online marketing services. With a focus on web design and full-stack web development, they have consistently delivered excellent results, as evidenced by increased traffic and positive feedback from 100% of reviewers, who praise their responsiveness, dedication, and effective project management.
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$5,000+$100 - $149 / hr2 - 9South Beloit, IL
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See all 1 projectsiSeed Digital is a web development company specializing in website creation and online marketing. They have received 100% positive feedback, with clients praising their professional approach and rapid website deployment, typically within a month. Reviewers consistently highlight their effective communication and the impressive results achieved, such as significant business growth.
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$10,000+Undisclosed10 - 49
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See all 1 projectsMass Horizon ® is a versatile production studio specializing in creating still, motion, AR, and VR content for advertising. They are highly praised for their adaptability and technical prowess, with 100% of reviewers highlighting their seamless workflow integration and ability to tailor processes to meet specific client needs. Clients consistently report satisfaction with their creative solutions and project outcomes.
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$50,000+$150 - $199 / hr10 - 49Denver, CO
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See all 7 projects303 Software is a full-stack web development company specializing in custom software development and web application development. Their reviews highlight a meticulous approach to project management and a strong alignment with client visions, resulting in enhanced usability and marketability of final products. With 100% positive feedback, reviewers consistently commend their attention to detail and proactive communication, fostering a trustful and successful partnership.
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$5,000+$25 - $49 / hr2 - 9Kolkata, India
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See all 2 projectsDigitallyMedia is a web development company excelling in custom website development and full-stack web development solutions. With a 100% positive feedback rate, their ability to deliver complex projects efficiently and responsively is highly praised, particularly their skill in developing bespoke platforms tailored to client needs. Clients commend their exceptional project management and practical problem-solving capabilities.
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$1,000+$25 - $49 / hr10 - 49
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See all 1 projectsDynaamx Inc. is a web development company specializing in website migration and successful platform launches. The overall feedback highlights their educational approach and positive attitude, with 100% of reviewers appreciating their effective project management and communication skills. Reviewers noted the company's ability to address complex requests thoroughly.
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$5,000+$100 - $149 / hr2 - 9
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See all 3 projectsOverture Consulting, LLC is an IT consulting firm specializing in SharePoint development and telecommunications solutions. According to client reviews, they consistently deliver timely and effective services, with 100% of reviewers expressing satisfaction with their communication and project management. Clients praise their expertise, particularly in SharePoint, and highlight the firm's commitment to understanding and addressing client needs comprehensively.
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$10,000+$100 - $149 / hr10 - 49Fort Myers, FL
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See all 22 projectsWebaroo offers Website Development and Web Design services, including Web Programming, to help clients establish a coherent online presence. Reviews highlight their professionalism, effective communication, and responsiveness, with clients appreciating their attention to detail and ability to simplify complex web concepts. Overall, Webaroo impresses clients by delivering tailored solutions that meet their specific needs and timelines.
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$5,000+$50 - $99 / hr10 - 49
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See all 3 projectsBeansmile Co., Ltd is a web development company specializing in full-stack web development and online development services, including web application development and custom website development. Across their reviews, 100% of clients praise their technical capabilities, adaptability, and proactive communication. The company is noted for its customer-centric approach, ensuring projects are delivered on time and tailored to clients' needs.
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$1,000+$25 - $49 / hr10 - 49Barrackpore, India
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See all 6 projectsTechScooper is a reputable web development firm specializing in website design and custom website development. Across reviews, 100% of clients commend their modern design capabilities and comprehensive support, while two reviews highlight their effective project management and timely delivery. Clients consistently report increased user engagement and lead generation following project completion.
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$5,000+< $25 / hr50 - 249Thiruvananthapuram, India
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See all 1 projectsInfinite Open Source Solutions LLP is a software development company specializing in creating customized applications, such as employee login and timesheet dashboards. Overall, their clients appreciate their efficient communication and timely project delivery. Approximately 100% of the feedback highlights their ability to understand and meet project requirements, although some suggest more direct communication with developers could enhance collaboration.
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$1,000+< $25 / hr50 - 249Indore, India
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See all 10 projectsLemosys Infotech Pvt Ltd is a web development company highly commended for its technical expertise in website development, SEO, and digital marketing services. With a 100% positive feedback rate, clients praise their strong work ethic, attention to detail, and timely project delivery, highlighting their impressive customer service and excellent job quality.
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$5,000+< $25 / hr10 - 49Ahmedabad, India
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See all 2 projectsKNP Technologies Private Limited is a mobile application development company known for delivering robust and high-quality apps for both Android and iOS platforms. Based on client feedback, 100% of reviewers highlight their impressive project execution and adherence to deadlines, with no significant areas for improvement noted. The company is praised for its professional management and effective communication.
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List of the Top 15 JavaScript Development Companies
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$50,000+$50 - $99 / hr50 - 249Gliwice, Poland
Ability to deliver
39.9/40.020/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
50% Web Development70% JavaScript50% Other -
$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 -
$10,000+$50 - $99 / hr50 - 249Gliwice, Poland
Ability to deliver
39.4/40.019.6/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
45% Web Development60% JavaScript55% Other -
$10,000+< $25 / hr250 - 999Thiruvananthapuram, India
Ability to deliver
37.7/40.018.4/20 Reviews10/10 Clients & Experience9.3/10 Market PresenceService focus
50% Web Development50% JavaScript50% Other -
$10,000+Undisclosed50 - 249San Francisco, CA
Ability to deliver
38.9/40.019.6/20 Reviews9.6/10 Clients & Experience9.7/10 Market PresenceService focus
40% Web Development50% JavaScript60% Other -
$10,000+$50 - $99 / hr50 - 249Montevideo, Uruguay
Ability to deliver
39.3/40.019.8/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
50% Web Development35% JavaScript50% Other -
$50,000+$100 - $149 / hr1,000 - 9,999San Francisco, CA
Ability to deliver
39.9/40.020/20 Reviews9.9/10 Clients & Experience10/10 Market PresenceService focus
15% Web Development25% JavaScript85% Other -
$5,000+$25 - $49 / hr50 - 249L'viv, Ukraine
Ability to deliver
36.9/40.018/20 Reviews10/10 Clients & Experience8.9/10 Market PresenceService focus
70% Web Development50% JavaScript30% Other -
$25,000+$25 - $49 / hr50 - 249Newark, DE
Ability to deliver
40/40.020/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
40% Web Development35% JavaScript60% 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 -
$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 -
$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 -
$5,000+< $25 / hr50 - 249Ahmedabad, India
Ability to deliver
36.8/40.017.2/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
60% Web Development45% JavaScript40% 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 - 9,999L'viv, Ukraine
Ability to deliver
38.8/40.019/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
21% Web Development18% JavaScript79% Other -
$25,000+$25 - $49 / hr50 - 249L'viv, Ukraine
Ability to deliver
37.2/40.018.2/20 Reviews10/10 Clients & Experience9/10 Market PresenceService focus
40% Web Development50% JavaScript60% Other -
$25,000+$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 Development33% JavaScript90% Other -
$10,000+$25 - $49 / hr250 - 999New York, NY
Ability to deliver
40/40.020/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
30% Web Development15% JavaScript70% Other -
$10,000+< $25 / hr250 - 999Kolkata, India
Ability to deliver
36.3/40.019/20 Reviews9/10 Clients & Experience8.4/10 Market PresenceService focus
35% Web Development30% JavaScript65% Other -
$5,000+< $25 / hr50 - 249Ahmedabad, 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+$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 -
$50,000+$150 - $199 / hr50 - 249Matlock, England
Ability to deliver
38.2/40.018.4/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
100% Web Development30% JavaScript -
$1,000+< $25 / hr1,000 - 9,999Los Angeles, CA
Ability to deliver
36.9/40.019.6/20 Reviews9.3/10 Clients & Experience8/10 Market PresenceService focus
20% Web Development25% JavaScript80% Other -
$10,000+$50 - $99 / hr10 - 49Warszawa, Poland
Ability to deliver
37.8/40.018.6/20 Reviews10/10 Clients & Experience9.2/10 Market PresenceService focus
50% Web Development70% JavaScript50% Other -
$50,000+$150 - $199 / hr50 - 249New York, NY
Ability to deliver
35.9/40.016.2/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
60% Web Development45% JavaScript40% Other -
$50,000+$150 - $199 / hr250 - 999Irvine, CA
Ability to deliver
36.4/40.016.4/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
30% Web Development30% JavaScript70% Other -
$10,000+< $25 / hr250 - 999Hanoi, Vietnam
Ability to deliver
37.9/40.018.6/20 Reviews10/10 Clients & Experience9.3/10 Market PresenceService focus
30% Web Development21% JavaScript70% Other -
$100,000+$25 - $49 / hr250 - 999Cebu City, Philippines
Ability to deliver
38.1/40.019.4/20 Reviews10/10 Clients & Experience8.7/10 Market PresenceService focus
30% Web Development20% 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.