Top 100 JavaScript Development Companies in San Francisco

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Top 100 JavaScript Development Companies in San Francisco

August 2022

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. 

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List of the Best San Francisco JavaScript Developers

  • 31
    • Scheduling

      4.9
    • Quality

      4.8
    • 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

    A real estate media and marketing firm hired Weby Agency for their design services. The team revamped the firm's logo, updated their site's content, and worked on the site's architecture through UI/UX design.

    "Their dedication, attention to detail, and willingness to accept feedback were impressive."

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  • 32
    • 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."

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  • 33
    • 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."

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  • 34
    • Scheduling

      4.6
    • Quality

      4.7
    • 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 is tasked with developing a web application for a sustainability consulting firm. Using Airtable and Retool, they build a simple data flow and design and test the application.

    "We are impressed by how fast the team can learn new topics and incorporate them into the final product."

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  • 35
    • $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

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  • 37
    • $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."

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  • 38
    • Scheduling

      4.6
    • Quality

      4.8
    • Cost

      4.4
    • NPS

      4.9
    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 was hired by an automation company to organize their data more efficiently with custom software. They are expected to improve their platform, which had limited functionalities before the project.

    "They made it incredibly easy to stay updated on the project and meet our expectations."

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  • 39
    • 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."

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  • 40
    • $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."

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  • 41
    • 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 provides digital marketing services for a cybersecurity consulting firm's end client. This includes SEO, digital transformation, and conversion marketing (CRO).

    "Vinncorp is an emerging tech firm, with a solid and proven record of delivering results, which is their unique part."

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  • 42
    • Scheduling

      4.8
    • Quality

      4.8
    • Cost

      4.6
    • NPS

      4.8
    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 organizes and implements a manual testing program to identify and correct bugs on a LegalTech startup's mobile application.

    "They have quickly learned about our business and customers' needs, which is difficult due to our niche market."

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  • 43
    • $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
  • 44
    • Scheduling

      5.0
    • 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

    Accelerance has helped a software company find a development partner. They’ve first assessed the client’s needs before presenting prospective vendors. 

    "I have found Accelerance to have a uniquely broad and deep understanding of the companies they work with."

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  • 45
    • $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

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  • 46
    • $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.

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  • 47
    • $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

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  • 48
    • $50,000+
    • 10 - 49 employees
    • San Francisco, CA

    Launched in 2013, Artyllect Consulting is a website development company. The small San Francisco, California-based team focuses on web development, digital strategy, Artificial Intelligence, blockchain, and more.

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  • 49
    • $25,000+
    • 250 - 999 employees
    • San Francisco, CA

    Midsize IT staff augmentation company Code Power, is in Guaynabo, Puerto Rico. Their services include IT staff augmentation, custom software development, web development, mobile app development, and more.

    Industries

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  • 50
    • $10,000+
    • 2 - 9 employees
    • San Francisco, CA

    UI Flow, a software development company, is in San Francisco, California. The small team focuses on custom software development, enterprise app modernization, and web development. The firm was founded in 2020.

    Industries

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  • 51
    • $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

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  • 52
    • $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

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  • 53
    • $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 rebuilt the website for a startup accelerator. Working in tandem with a design team, they created a new online face for the program to drive action from the target audience.

    “They're well-organized, and their account management is really good.”

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  • 54
    • $10,000+
    • 10 - 49 employees
    • San Francisco, CA

    Harlo Agency is a web design agency located in Portland, Oregon and San Francisco, California. Launched in 2004, the small team specializes in web design, mobile app development, web development, branding, and more.

    Industries

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  • 55
    • $1,000+
    • 2 - 9 employees
    • San Francisco, CA

    Headquartered in San Francisco, California and Lahore, Pakistan, Cozmot Inc is a website development firm. The small company was founded in 2018. Their services include web development, e-commerce development, application management & support, CRM consulting and SI, and more.

    Industries

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  • 56
    • $5,000+
    • 10 - 49 employees
    • San Francisco, CA

    Design Yard, a small e-commerce development firm, is headquartered in San Francisco, California. They specialize in e-commerce development, web development, mobile app development, ux/ui design, and more and were established in 2018.

    Industries

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  • 57
    • $1,000+
    • 250 - 999 employees
    • San Francisco, CA
    Established in 2019, ShopBase is a market research company. The company offers market research, email marketing, mobile & app marketing, web design, and more and has a midsize team.

    Industries

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  • 58
    • Undisclosed
    • 10 - 49 employees
    • San Francisco, CA

    Langtech is a web development company. Founded in 1987, the company is in San Francisco, California. The small team specializes in web development, custom software development, and CRM consulting and SI.

    Industries

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  • 59
    • Undisclosed
    • 2 - 9 employees
    • San Francisco, CA

    Resource Fast is a non-voice bpo/back office services company established in 2018. Their small team is headquartered in San Francisco, California. Their services include non-voice bpo/back office services, voice services, finance & accounting outsourcing (FAO), and web development.

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  • 60
    • $1,000+
    • 2 - 9 employees
    • El Sobrante, CA

    Nerd Crossing is an IT managed services company headquartered in Walnut Creek, California and El Sobrante, California. The small company was founded in 2010. Their team focuses on IT managed services, cybersecurity, IT strategy consulting, web design, and more.

    Industries

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