Top 100 JavaScript Development Companies in San Francisco

Directory image
  1. Home
  2. Web Developers
  3. JavaScript
  4. San Francisco

Top 100 JavaScript Development Companies in San Francisco

February 2023

Looking for a top JavaScript developer in San Francisco?

If you're hiring a JavaScript developer to help you build or update a website that's responsive and interactive, consider the pros and cons of JavaScript as a programming language. Advantages include its speed because it's executed on the client-side; reduction in server load; and diverse functionality. 

Jump to Most Reviewed Companies

List of the Best San Francisco JavaScript Developers

  • 31
    • $10,000+
    • 10 - 49 employees
    • San Francisco, CA

    Camp Creative is a digital marketing and branding agency headquartered in Berkeley, Calif., with another office in Bend, Ore. With a team of around 20, Camp Creative specializes in web design, graphic design, and UX/UI design.With Camp Creative's help, sales increased.

    Clients

    • ABB
    • Adobe
    • Bay Alarm
    • Bayer Healthcare

    Industries

    Notable Project

    Camp Creative completely redesigned a website using WordPress and continue to generate engaging content for potential customers, which are both businesses and consumers. They also perform SEO services.

    "The way they balance creativity and data management is pretty impressive."

    Visit Site
  • 32
    • $5,000+
    • 50 - 249 employees
    • San Francisco, CA

    Digia is a software development company founded in 2017. Based in Toronto, Canada, the team specializes in web development, mobile app development, and enterprise app modernization. 

    Clients

    • TempStars.ca
    • Pangea
    • Feast
    • Shift Posts

    Industries

    Notable Project

    Digia Technology created a nonprofit's private community site. They leveraged WordPress modules where appropriate, built an opportunity listing module, and integrated the site into the client's public website.

    "We were impressed by the flexibility, professionalism, and responsiveness of the whole team."

    Visit Site
  • 33
    • $10,000+
    • 50 - 249 employees
    • San Francisco, CA

    Evistep Enterprise is a software company with over 50 experts based in Yerevan, Armenia. Founded in 2010, they specialize in both web and mobile app development for small and mid-market firms. They work with clients from the industries of gaming, real estate, and e-commerce.

    Clients

    • WebWork Time Tracker

    Industries

    Notable Project

    Evistep Enterprise provided IT consulting for a remote job company. The team integrated several complex applications as well as a third-party API.

    "Their level of expertise is amazing."

    Visit Site
  • 34
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 10 - 49 employees
    • San Francisco, CA

    Mobile application development firm Demjee was launched in 2020. They are based in London, United Kingdom and have a small team. Their services include mobile app development, ux/ui design, web design, and custom software development.

    Industries

    Notable Project

    Demjee created a mobile app for a video marketing company. The team led the full product development cycle, creating an interactive prototype and a video streaming OTT solution for the client's product.

    "We were impressed by their technical experience and user-focused approach."

    Visit Site
  • 35
    • $5,000+
    • 10 - 49 employees
    • San Francisco, CA

    Siddhi Infosoft is a web and mobile app development company based in San Francisco, with a secondary location in Ahmedabad, India. Siddhi Infosoft was founded in 2011 and has 25 employees. Services offered by this company include mobile app development and web development for companing ranging from startups to Fortune 500 brands.

    Clients

    • DizzyDoctor
    • GHN
    • Sylky

    Industries

    Notable Project

    After various projects together, Siddhi Infosoft developed a responsive web platform, abiding by detailed specifications. They created a flexible backend for managing content, customized plugins, and more.

    "We’re very confident about their dependability."

    Visit Site
  • 36
    • Scheduling

      4.9
    • Quality

      4.9
    • Cost

      4.9
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 2 - 9 employees
    • San Francisco, CA

    Based in San Francisco, Weby Agency is a design, marketing & growth consulting company that was founded in 2017. Their small team of two assists with web design & development, content marketing, and e-commerce development for primarily small businesses. 

    Clients

    • https://puraleafs.com/
    • https://nanopiur.com/
    • https://www.gr8nola.com/
    • https://www.bodyrestore.co

    Industries

    Notable Project

    When COVID-19 hit, a farm-to-table company had to transition their services to retail. Weby Agency revamped their WordPress platform, helping with the design, copywriting, and WooCommerce integration.

    "Several of my customers said the new website was a big improvement."

    Visit Site
  • 37
    • $5,000+
    • 10 - 49 employees
    • San Mateo, CA
    Located in San Mateo, California and Beograd, Serbia, Action Engine is a software development firm. They offer custom software development, web development, ux/ui design, mobile app development, and more and were launched in 2017.

    Clients

    • ESRI
    • Foursquare

    Notable Project

    Action Engine built a cloud-based commercial real estate investment software. They wanted an online marketplace to support property developers and investors to manage.

    "They were flexible as our business or requirements had to change."

    Visit Site
  • 38
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • Undisclosed
    • 50 - 249 employees
    • San Francisco, CA

    Scalio is a global digital product agency based in San Francisco, with offices in Atlanta and in Orange, Calif. The agency, founded in 2011, has more than 40 employees and provides, among others, web design, UX/UI design, and web development services to midmarket and other companies in various industries. 

    Clients

    • Google
    • Viacom
    • Shell
    • Uber

    Industries

    Notable Project

    Scalio reached out to a mobile solutions provider to offer iOS and Android solutions. The team was in charge of overhauling the company's existing platform into one that's more scalable.

    "From beginning to end project management is fast and transparent."

    Visit Site
  • 39
    • Scheduling

      4.8
    • Quality

      4.8
    • Cost

      4.8
    • NPS

      4.6
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 1,000 - 9,999 employees
    • San Francisco, CA
    Established in 2011, AppTecHub is a large mobile application development company. Their team offers mobile app development, web development, and custom software development. The agency is located in San Francisco, California.

    Industries

    Notable Project

    A custom carwash and design company hired AppTecHub to develop web and mobile apps. They created a custom CRM platform which they currently support and maintain.

    "They've made my work much easier in developing the app and addressing my issues."

    Visit Site
  • 40
    • Scheduling

      4.6
    • Quality

      5.0
    • Cost

      4.5
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 50 - 249 employees
    • San Francisco, CA

    Tech Pandas , a small IT strategy consulting company, is located in , California. Their services include IT strategy consulting, IT managed services, web development, and mobile app development.

    Industries

    Notable Project

    Tech Pandas provides custom software development services for a beauty products and publishing company. The team has developed the client's e-commerce platform via Shopify and has designed their app, as well.

    "They would offer alternative solutions and go the extra mile whenever we made any requests."

    Visit Site
  • 41
    • Scheduling

      4.6
    • Quality

      4.9
    • Cost

      4.4
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 10 - 49 employees
    • San Francisco, CA

    Galliot is a San Francisco-based software development firm founded in 2018. With an additional office in Montevideo, Uruguay, their 10-man-team develops products for midmarket and enterprise-level clients. While custom software and DevOps are their specialties, they also offer web development and cloud consulting.

    Clients

    • Life science
    • Biopharma
    • Agtech and Energy companies in Bay Area
    • Fintech

    Industries

    Notable Project

    Galliot assisted with cleaning up and organizing the company’s financial data and migrating it all from QuickBooks and Excel sheets to a financial ERP that manages all information in one place.

    "Galliot is responsive."

    Visit Site
  • 42
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 10 - 49 employees
    • San Francisco, CA

    Proleadsoft is a full-service digital agency headquartered in San Francisco, Calif. With a team of around 15 employees, Proleadsoft specializes in web development, SEO, and web design.With Proleadsoft's help, the youth nonprofit's website is modern, easy to navigate, and has attracted more traffic.

    Clients

    • Travel Merchants
    • Nofomo
    • the DJ List
    • Incline Insurance

    Notable Project

    Proleadsoft’s founder became an advisory board member for the nonprofit and provided four team members to redesign an obsolete website from scratch, integrating social media and assisting with content.

    "I would recommend them to anyone seeking assistance in web design."

    Visit Site
  • 43
    • $50,000+
    • 10 - 49 employees
    • San Francisco, CA

    MageBinary is an e-commerce development firm launched in 2012. Their small team is based in Auckland, New Zealand. Their services include e-commerce development, ERP consulting and SI, web development, digital strategy, and more.

    Industries

    Visit Site
  • 45
    • $10,000+
    • 10 - 49 employees
    • Oakland, CA

    Reverence Global is a marketing and development firm based in Oakland, Calif. with more than 10 experts. They have offered marketing strategy, UX/UI design, and SEO solutions since their founding in 2020. They work with clients ranging from startups to large firms.

    Clients

    • Good Radiance Inc.

    Industries

    Notable Project

    Reverence Global redesigned a WordPress website and developed a variety of branding materials including an e-book, brochures, packaging, and more. They are in talks to provide similar services in the future.

    "I’m very happy with how they helped me. Sometimes I had very urgent issues, and they got into the website quickly."

    Visit Site
  • 46
    • Scheduling

      4.8
    • Quality

      4.5
    • Cost

      4.3
    • NPS

      4.5
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 10 - 49 employees
    • Foster City, CA
    Software development firm MugCo was founded in 2020. The small Pleasanton, California-based team specializes in custom software development, e-commerce development, web development, cloud consulting & SI, and more.

    Notable Project

    MUGCO augmented their internal staff to provide offshore services for a construction logistics platform. They use the client's provided job description to look for qualified contractors. 

    "We admire the level of support to not only find candidates but also support us throughout the engagement."

    Visit Site
  • 47
    • Scheduling

      4.2
    • Quality

      4.5
    • Cost

      4.7
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 10 - 49 employees
    • San Francisco, CA

    Toi is a San Francisco based digital marketing company. They were founded in 2010 and have a team of 420 employees who specialize in UX/UI design, branding, and web design. They mainly work with clients in the arts and entertainment, business services, and consumer product industries.

    Clients

    • Benziger Winery
    • The DJ List
    • Red Bull Records
    • Greystone Hotels

    Industries

    Notable Project

    Toi supplies web development and design expertise to support digital social impact campaigns in an outsourced engagement. Creations include meme generators, full-scale site builds, and reconfigurations.

    "They care about the issues we tackle."

    Visit Site
  • 48
    • $10,000+
    • 10 - 49 employees
    • Berkeley, CA
    Custom software development firm Sather Development is based in Berkeley, California. The small agency was launched in 2022. Their services include custom software development, web development, web design, ux/ui design, and more.

    Notable Project

    Sather Development designed and developed a financial analytics company’s website using HTML, CSS, and JavaScript. They also implemented SEO improvements on the platform. 

    "Sather's team always responded within a few hours, even on weekends."

    Visit Site
  • 49
    • Scheduling

      4.8
    • Quality

      5.0
    • Cost

      4.5
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 10 - 49 employees
    • San Francisco, CA
    VinnCorp is an application development firm based in Elk Grove, California; Hayward, California and San Francisco, California. Founded in 2019, the small team specializes in mobile app development, custom software development, branding, IT staff augmentation, and more.

    Industries

    Notable Project

    VinnCorp is providing DevOps services for a consulting company. They're tasked with managing the client's databases, network infrastructures, cloud storage, and systems support.

    "VinnCorp has a strong grasp of multiple Cloud technologies."

    Visit Site
  • 50
    • Scheduling

      4.8
    • Quality

      4.9
    • Cost

      5.0
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 50 - 249 employees
    • San Francisco, CA

    Five Jars, a web development firm, was established in 2017. Their small team is in Dover, Delaware and Kyiv, Ukraine. Their services include web development, custom software development, and web design.

    Clients

    • George Washington’s Mount Vernon
    • YMCA of the North
    • Council for Exceptional Children
    • YMCA of Greater Brandywine

    Industries

    Notable Project

    Five Jars developed a youth organization’s Drupal website from scratch. Users can register for classes and buy products through the site. They’re currently providing site maintenance and ad hoc tech support.

    "We’ve been very happy with them; they’re one of my best decisions as a chief strategy officer."

    Visit Site
  • 51
    • Scheduling

      4.8
    • Quality

      4.8
    • Cost

      4.6
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 250 - 999 employees
    • San Francisco, CA

    GeekyAnts is a mobile app development company that's headquartered in Bangalore, India; they also have a London office. They were founded in 2006 and have about 59 employees that provide services for mobile app development, web development, and UX/UI design services to clients of all sizes in a wide array of industries. 

    Clients

    • Google LLC
    • Siveco Romania
    • ChildMind Institute
    • Tellius

    Industries

    Notable Project

    GeekyAnts was hired by an EdTech company to improve their mobile app using React. They built the app,  improved its UI/UX design, and provided API access and documentation.

    "The app was successfully finished and launched on iOS and Android stores."

    Visit Site
  • 52
    • $25,000+
    • 50 - 249 employees
    • San Francisco, CA
    Founded in 1999, WebEnertia, Inc. Is a web design agency. They are located in San Jose, California and San Francisco, California and have a midsize team. The firm specializes in web design, web development, ux/ui design, and digital strategy.

    Clients

    • RMS
    • Cisco Systems
    • Bitdefender
    • Tealbook

    Industries

    Visit Site
  • 53
    • $100,000+
    • 50 - 249 employees
    • San Francisco, CA
    Carbon Five is a software development firm. Established in 2000, the midsize company is located in San Francisco, California; Santa Monica, California; Chattanooga, Tennessee and New York, New York. Their services include custom software development, mobile app development, web development, web design, and more.

    Industries

    Visit Site
  • 54
    • Scheduling

      4.9
    • Quality

      5.0
    • Cost

      4.8
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $100,000+
    • 10 - 49 employees
    • Redwood City, CA

    Accelerance is a small IT strategy consulting company. The Redwood City, California-based firm was established in 2001. Their services include IT strategy consulting, custom software development, IT staff augmentation, enterprise app modernization, and more.

    Clients

    • Acrowire
    • Find.com
    • MediaPro
    • AdRoll

    Industries

    Notable Project

    A content software management company needed to hire software engineers, automation test engineers, and product owners to expand their system. They hired Accelerance because of their reputation in the field.

    "Their level of customer service is impressive."

    Visit Site
  • 55
    • $5,000+
    • 10 - 49 employees
    • Oakland, CA
    LimeTech is an application development firm established in 2006. Located in Oakland, California and Boston, Massachusetts, their small team specializes in mobile app development, web development, IT strategy consulting, ux/ui design, and more.

    Industries

    Visit Site
  • 56
    • $50,000+
    • 10 - 49 employees
    • Emeryville, CA
    Project6 Design, Inc. Is a small web design company. Located in Emeryville, California, the company was launched in 2001. Their team specializes in web design, web development, graphic design, branding, and more.

    Industries

    Visit Site
  • 57
    • $1,000+
    • 2 - 9 employees
    • San Francisco, CA
    Bloossom.com, an e-commerce development firm, was established in 2020. The agency offers e-commerce development and web development and has a small team.

    Industries

    Visit Site
  • 58
    • $5,000+
    • 10 - 49 employees
    • San Francisco, CA
    Founded in 2016, CyberProtocols is an e-commerce development firm. Headquartered in San Francisco, California, their small team focuses on e-commerce development, web development, and cybersecurity.
    Visit Site
  • 59
    • $25,000+
    • 10 - 49 employees
    • Oakland, CA

    Mangrove Web Development is a custom web development agency that offers web design, web develppment, and SEO services to their clients. Founded in 2009, their team is made up of 10 employees with their offices located in Oakland, Calif. and Truckee, Calif.

    Clients

    • Mighty Networks
    • Take on Wall St // Is Our Economy Fair
    • Beneficial State Foundation
    • Wikimedia

    Notable Project

    Mangrove Web Development custom-created an annual report online. Services included transitioning a microsite to a WordPress platform.

    "The team patiently executed stakeholder feedback."

    Visit Site
  • 60
    • $100,000+
    • 10 - 49 employees
    • San Francisco, CA

    Flatirons Development is a UX/UI product design and software development consultancy, founded in 2018. They employ seven staff in their office in Boulder, Colo., where they focus primarily on product management and strategy, UI and UX design, web development, and native mobile app development. They work with a range of small, midmarket and global companies.

    Clients

    • Abbott
    • Osmosis
    • Zeta
    • Nomad Health

    Industries

    Notable Project

    Flatirons Development has been hired to create an MVP for a SaaS startup. They've put together a Jira roadmap and are working in two-week sprints.

    "I can tell that they care about the quality of our product."

    Visit Site