Top 100 JavaScript Development Companies in San Francisco

The Best of November 2024

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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. Disadvantages to consider include security such as bugs on the client-side.

Jump to Most Reviewed Companies

List of the Best San Francisco JavaScript Developers

31

Dayspring Partners
(8 Reviews) 4.9
- Timeliness
  4.6
- Service Excellence
  4.8
- Value
  4.6
- Would Recommend
  4.9
- $50,000+
- 10 - 49 employees
- San Francisco, CA
Dayspring Technologies is a custom software and web development firm founded in 1997. They have just under 30 employees based in their San Francisco office. Much of their work focuses on custom software development for in-house platforms, but they also build client-side web apps, user interfaces, and e-commerce platforms.

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Clients
- American Red Cross
Industries
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32

Bloorsoft
(9 Reviews) 5.0
- Timeliness
  5.0
- Service Excellence
  5.0
- Value
  5.0
- Would Recommend
  5.0
- $10,000+
- 2 - 9 employees
- San Francisco, CA
Custom software development company Bloorsoft was founded in 2022. The small team specializes in custom software development, digital strategy, social media marketing, content marketing, and more. The firm is in Toronto, Canada.
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Industries
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33

Kalamuna
(18 Reviews) 4.8
- Timeliness
  4.6
- Service Excellence
  4.8
- Value
  4.4
- Would Recommend
  4.8
- $25,000+
- 10 - 49 employees
- Oakland, CA
Kalamuna is a web development and design agency founded in 2012. They have 15 employees based in their Oakland, Calif. office. The bulk of their services focus on full-service web development, from visual design to server-side operations. Kalamuna also offers custom software development and digital strategy consulting.

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Clients
- American Foundation for the Blind
Industries
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34

PLATFORM
(27 Reviews) 5.0
- Timeliness
  4.9
- Service Excellence
  4.9
- Value
  4.6
- Would Recommend
  5.0
- $10,000+
- 10 - 49 employees
- San Francisco, CA
PLATFORM, based out of San Francisco, CA, is a UX/UI agency that also engages in web and mobile app development. The majority of their clients are small businesses, though they work with enterprise and midmarket businesses as well. PLATFORM has done projects in advertising, financial services, information technology, and real estate, among others.

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Clients
- Spotify
Industries
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35

Daxima
(7 Reviews) 5.0
- Timeliness
  5.0
- Service Excellence
  5.0
- Value
  4.9
- Would Recommend
  5.0
- $25,000+
- 50 - 249 employees
- Orinda, CA
Based out of Orinda, CA with satellite offices in India and Croatia, Daxima is a software development company. The team of more than 50 employees has been in business since 2003. They provide web, software, and mobile app development for clients around the world.

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Clients
- T-Mobile US
Industries
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36

Robosoft Technologies Inc.
(23 Reviews) 4.7
- Timeliness
  4.5
- Service Excellence
  4.7
- Value
  4.5
- Would Recommend
  4.8
- $25,000+
- 250 - 999 employees
- San Francisco, CA
Robosoft Technologies is a full-service digital experiences agency offering digital advisory, design strategy, UX/UI services, application development & maintenance and expertise in emerging technologies such as AR, VR, blockchain, chatbots and more. Established in 1996 and headquartered in San Francisco, the team of 500+ has offices in Mumbai, Udupi, Bengaluru, Chicago, and New York.

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Clients
- Warner Bros. Discovery
Industries
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37

Digi Hotshot
(2 Reviews) 5.0
- Timeliness
  4.8
- Service Excellence
  5.0
- Value
  5.0
- Would Recommend
  4.5
- $10,000+
- 2 - 9 employees
- San Francisco, CA
Digi Hotshot, a web development company, was launched in 2019. They are in Dehradun, India and have a small team. Digi Hotshot offers web development, web design, and ux/ui design.

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38

State Creative
(21 Reviews) 4.8
- Timeliness
  4.8
- Service Excellence
  4.7
- Value
  4.7
- Would Recommend
  4.9
- $10,000+
- 2 - 9 employees
- Oakland, CA
State Creative is a web design and development company located in Oakland, CA. Founded in 2000, State Creative's team of nearly 10 employees also offer e-commerce development. They serve small and mid-market businesses in the business services, finance, and consumer products industries.

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Clients
- MarsVenus
Industries
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39

Gearheart.io
(12 Reviews) 4.9
- Timeliness
  4.8
- Service Excellence
  4.9
- Value
  4.7
- Would Recommend
  4.9
- $50,000+
- 10 - 49 employees
- San Francisco, CA
Gearheart.io is a web development firm headquartered in Kiev, Ukraine and founded in 2012. Along with web development, their team of 17 also assists clients with mobile app development. They focus on serving small businesses in the healthcare, financial services, and business services sectors.

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Clients
- SmartSuite
Industries
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40

Galliot
(9 Reviews) 4.9
- Timeliness
  4.8
- Service Excellence
  4.8
- Value
  4.7
- Would Recommend
  5.0
- $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.

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Clients
- Life science
Industries
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41

Binstellar Technologies Pvt. Ltd.
(14 Reviews) 5.0
- Timeliness
  4.9
- Service Excellence
  5.0
- Value
  5.0
- Would Recommend
  5.0
- $1,000+
- 10 - 49 employees
- San Mateo, CA
App development company BinStellar Technologies Pvt. Ltd. Was founded in 2018. The firm offers mobile app development, web development, and branding and has a small team.

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Clients
- Test Routes
Industries
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42

Thomas Digital Web Design
(2 Reviews) 5.0
- Timeliness
  5.0
- Service Excellence
  5.0
- Value
  5.0
- Would Recommend
  5.0
- $5,000+
- 10 - 49 employees
- San Francisco, CA
Thomas Digital Web Design is a web design agency based in San Francisco. The agency, founded in 2010, is a team of less than ten that provides web design, web development, and SEO services to small and midmarket companies.

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Clients
- California Olive Ranch
Industries
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43

IM Republic, Inc
(2 Reviews) 4.8
- Timeliness
  4.3
- Service Excellence
  4.3
- Value
  4.3
- Would Recommend
  4.8
- $5,000+
- 10 - 49 employees
- San Francisco, CA
IMRepublic, Inc, a custom software development company, was established in 2005. The small San Francisco, California-based team provides custom software development, mobile app development, web development, ux/ui design, and more.
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Clients
- Riverside Insights
Industries
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44

Impekable
(29 Reviews) 4.8
- Timeliness
  4.7
- Service Excellence
  4.8
- Value
  4.6
- Would Recommend
  5.0
- $100,000+
- 10 - 49 employees
- San Francisco, CA
This California-based software company has strong expertise in web and mobile app development. The team of less than 50 has worked in various industries, from fitness to healthcare – they’ve done it all.

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Clients
- Google
Industries
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45

Scalio
(1 Reviews) 5.0
- Timeliness
  5.0
- Service Excellence
  5.0
- Value
  5.0
- Would Recommend
  5.0
- 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.

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Clients
- Intuitive Surgical
Industries
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46

Yeti LLC
(4 Reviews) 4.5
- Timeliness
  4.0
- Service Excellence
  4.5
- Value
  4.9
- Would Recommend
  4.6
- $25,000+
- 10 - 49 employees
- San Francisco, CA
Yeti LLC is a software development and design company founded in 2010. They have 20 employees, all of whom work out of an office in San Francisco. Yeti's practice is extensive for a firm of its size; they offer custom software development, UI/UX design, mobile apps, and IoT development.

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Clients
- Google
Industries
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47

Rocket Code
(4 Reviews) 4.8
- Timeliness
  4.6
- Service Excellence
  4.5
- Value
  4.8
- Would Recommend
  4.9
- $10,000+
- 50 - 249 employees
- San Francisco, CA
The Rocked Code is a custom software development firm. Their midsize team is located in Ciudad de México, Mexico. Their services include custom software development, other IT consulting and SI, application management & support, product design, and more. The agency was established in 2016.

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Clients
- Coru
- Creze
- Hexalud
- SEOS Energy
Industries
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48

Wunderdogs
(15 Reviews) 4.9
- Timeliness
  4.8
- Service Excellence
  4.8
- Value
  4.8
- Would Recommend
  4.8
- $5,000+
- 10 - 49 employees
- San Francisco, CA
Wunderdogs is a brand agency based in San Francisco with more than two professionals. Since their founding in 2017, they have offered branding, marketing strategy, and web design solutions to clients in the industries of financial services, IT services, and more.

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Clients
- Shell
Industries
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49

G360Technologies
(2 Reviews) 5.0
- Timeliness
  5.0
- Service Excellence
  4.8
- Value
  4.8
- Would Recommend
  5.0
- $10,000+
- 50 - 249 employees
- San Mateo, CA
ITSystems is a service company founded in 2010 with more than 10 experts. They offer custom software development, IT strategy consulting, and other application development solutions from their office in Montevideo, Uruguay. They work with small and mid-market firms alike.

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Industries
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50

SpaceBus
(5 Reviews) 5.0
- Timeliness
  5.0
- Service Excellence
  4.9
- Value
  5.0
- Would Recommend
  5.0
- $25,000+
- 10 - 49 employees
- Berkeley, CA
SpaceBus is a Magento development agency with two locations—one in Berkeley, Calif., and one in Dnipro, Ukraine. Since 2019, their team of 10+ employees provides Magento-based e-commerce development and web development to mid-market and enterprise-level clients.

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Clients
- Yamaha
Industries
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51

Siddhi Infosoft
(16 Reviews) 5.0
- Timeliness
  4.9
- Service Excellence
  4.9
- Value
  4.9
- Would Recommend
  5.0
- $5,000+
- 50 - 249 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.

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Clients
- DizzyDoctor
Industries
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52

Camp Creative
(4 Reviews) 5.0
- Timeliness
  4.9
- Service Excellence
  4.8
- Value
  4.8
- Would Recommend
  5.0
- $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.

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Clients
- ABB
Industries
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53

Dworkz
(8 Reviews) 4.9
- Timeliness
  4.7
- Service Excellence
  4.8
- Value
  4.8
- Would Recommend
  4.9
- $10,000+
- 10 - 49 employees
- San Francisco, CA
D.Workz Interactive is a full-service design and development company located in San Francisco, CA. Since its founding over 10 years ago, D.Workz Interactive and its team of nearly 50 employees have specialized in UX/UI design, web design, web development, and mobile app development. They serve a range of clients in the healthcare, financial services, education, and transportation industries.

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Clients
- Cellanome
Industries
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54

VinnCorp
(13 Reviews) 4.9
- Timeliness
  4.8
- Service Excellence
  4.9
- Value
  4.7
- Would Recommend
  4.8
- $5,000+
- 50 - 249 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.

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55

NG Logic
(8 Reviews) 4.7
- Timeliness
  4.6
- Service Excellence
  4.7
- Value
  4.4
- Would Recommend
  4.8
- $25,000+
- 50 - 249 employees
- San Mateo, CA
NG Logic is a software company headquartered in Warsaw, Poland that specializes in mobile app and web development. Founded in 2003, the company has an additional office in Austin, Texas and has over 50 employees.

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Clients
- Digital Cheetach Perception Software Contractroom
Industries
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56

Charly Agency
(30 Reviews) 4.9
- Timeliness
  4.9
- Service Excellence
  4.9
- Value
  4.9
- Would Recommend
  5.0
- $1,000+
- 10 - 49 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.

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Clients
- https://puraleafs.com/
Industries
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57

AllCode
(24 Reviews) 5.0
- Timeliness
  5.0
- Service Excellence
  5.0
- Value
  5.0
- Would Recommend
  5.0
- $5,000+
- 50 - 249 employees
- San Francisco, CA
AllCode is a digital agency based in San Francisco. Founded in 2015, they have approximately 15 employees who focus on Cloud Computing, Custom Software Development, and Web Development.

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Clients
- Twilio
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58

Action Engine
(2 Reviews) 4.8
- Timeliness
  4.8
- Service Excellence
  5.0
- Value
  4.0
- Would Recommend
  4.8
- $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.

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Clients
- ESRI
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59

webkeyz
(1 Reviews) 4.5
- Timeliness
  4.0
- Service Excellence
  4.5
- Value
  4.0
- Would Recommend
  5.0
- $25,000+
- 50 - 249 employees
- San Francisco, CA
UX design agency webkeyz is headquartered in San Francisco, California and Cairo, Egypt. The small agency was established in 2009. Their services include ux/ui design, product design, and branding.

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Clients
- Microsoft
Industries
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60

Clear Digital

(0 Reviews)

Not yet reviewed.
- $25,000+
- 50 - 249 employees
- San Jose, CA
Clear Digital is a web design company. The agency is located in San Jose, California and San Francisco, California. Their services include Web Design and Web Development.
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Clients
- RMS
Industries
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