Do you need a software testing company in California to ensure the quality, functionality, and performance of your digital solutions? From Silicon Valley to the rest of the Golden State, we have assessed success stories and client reviews of top companies to build our listing and offer local businesses like yours only the top candidates. Browse our directory by industry, pricing, and team size to find the right partner for your needs.
Best California Software Testing Agency Rankings
112 Companies - Rankings updated: April 27, 2026
All agencies are evaluated on DesignRush for demonstrated expertise and authentic client reviews to support your decision. Certain placements are paid.
Your Software Product Development Partner
Velotio Technologies is an outsourced software product development partner for technology startups and enterprises. We combine innovative ideas with business expertise and the latest transformational technologies to drive business success for our customers, help them put their customers'​ needs at the core [... view Velotio Technologies profile ]- Location
- San Ramon, California
- Number of Employees
- 250 - 499
- Minimal Budget
- Under $1,000
Build Better Software.
Tech.us is a leading provider of specialized technology services, including custom software development, artificial intelligence and machine learning solutions, mobile app development, web and cloud application development, and cybersecurity. [... view Tech.us, Inc profile ]- Location
- San Jose, California
- Number of Employees
- 100 - 249
- Minimal Budget
- $10,000 - $25,000
World Class Software Solutions
Internet Soft, an IT company excels in providing state-of-the-art solutions. Our offerings include Digital Transformation, AI/ML, IoT, Banking, and Blockchain software solutions, customized to serve both B2B and B2C customers. [... view Internet Soft profile ]- Location
- San Jose, California
- Number of Employees
- 500 - 999
- Average Hourly Rate
- $30/hr
- Minimal Budget
- $1,000 - $10,000
Design and Development Done Right!
Povio is a company that is based in San Francisco and specializes in designing and developing digital products that make a positive impact. With over 1000 successful projects delivered and a team of over 200 skilled professionals, we have collaborated with multinational companies like VW, unicorns such as [... view Povio profile ]- Location
- San Francisco, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $70/hr
- Minimal Budget
- $1,000 - $10,000
Railsware - A software development agency
We're a software development agency that builds products that scale. Our engineering-first culture and product-minded approach have powered success stories like Calendlythe scheduling platform that revolutionized meetings for millions. [... view Railsware profile ]- Location
- West Hollywood, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $149/hr
- Minimal Budget
- $50,000 & Up
EpicBliss Solutions provides a variety of IT services.
Many worldwide clients are now using "EpicBliss" benchmark solutions, We're capable to drive you to the right tech-track for your laudable idea. So, let's scrutinize your business need, mold it and establish it with the latest and most suitable technologies. [... see all EpicBliss reviews ]- Location
- Ontario, California
- Number of Employees
- Under 49
Top Mobile App and Web Development Company in Canada, USA and UK
We design highly polished iPhone, Android and Web Apps for startups and Enterprise clients. [... view MobMaxime profile ]- Location
- Sunnyvale, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $15/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 3 Projects Listed
We help accelerate your IoT!
Altiux Innovations is a software and product engineering services organization focused on helping you accelerate the development of your IoT solutions and products. We provide specialized engineering services across the entire IoT development cycle, from consulting, device engineering, cloud and mobility [... view Altiux Innovations Pvt. Ltd. profile ]- Location
- Milpitas, California
- Number of Employees
- 50 - 99
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 1 Project Listed
Full-service IT solutions company
A full-service IT company with ISO 9001:2015 certification, Cybrain Software Solutions provides top-notch software solutions to brands all over the world. [... view Cybrain Software Solutions profile ]- Location
- Ventura, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $49/hr
- Minimal Budget
- $1,000 - $10,000
Your Business Cataylst
ByteBotix InfoTech LLP is the top service provider, We focus on Industrial and web intelligence, Web and Mobile Applications and IOT based products. Whether you are a small , medium or largescale company we have got covered you all. What makes us stand out is that we deliver secured, standard and cost [... view ByteBotix InfoTech LLP profile ]- Location
- Vacaville, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $25/hr
- Minimal Budget
- Under $1,000
Trusted by Global Enterprises
At Briskstar Technologies, we have 6+years of experience in core development which makes valuable additions to help clients to grow their business. We have an experienced team of developers based out in India who can assist clients remotely as per their time zone with a weekly reporting structure. [... view Briskstar Technologies profile ]- Location
- Torrance, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $20/hr
- Minimal Budget
- $1,000 - $10,000
Grow with Technology.
We have a Team of 100+ Skilled App Developers who thrive on rolling up their sleeves and solving your IT problems and meeting your business needs like APP Development, Software Development, Cloud Consulting, Generative AI Development, Cyber Security Services, Custom ERP Software Development, and Web [... view NextOlive profile ]- Location
- Irvine, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $10,000 - $25,000
Related Services in California
Software Testing Companies in California
About The Author and Expert Reviewer
Selina Garcia has authored 500+ articles and edited 50+ published books in economics, law, and history. Her unique blend of experiences allows her to approach content creation from a well-rounded perspective. Currently, Selina applies her expertise to producing insightful articles on IT, software, and applications for DesignRush.
Sergio is a technology leader with over six years of experience managing global teams and delivering projects across fintech, sportstech, and B2B platforms. At DesignRush, he drove product growth and development execution, building tools that speed up processes by 95% and cut costs by 35% while maintaining full uptime.
Latest Trends Related to Software Testing
