Top Software Testing Companies in California
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List of the Best Software Testing Agencies and Software Testing Professionals in California
Certain agencies may be featured through sponsored placements. Rankings and SF Scores remain unbiased and are based solely on our evaluation methodology.
70 Companies
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22
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Reliable IT Solutions to Power Your Business Growth
Ojas is a CMMI Level 3 certified IT services provider with a state-of-the-art offshore development center in Hyderabad, India. With a team of 500+ skilled IT professionals, we deliver cost-effective, scalable, and high-quality technology solutions that help businesses enhance efficiency and maximize ROI. Our expertise spans a wide range of technologies, including Blockchain, Java, Python, Angular, Android, Node.js, React, and mobile app development, allowing us to craft custom solutions for diverse industry needs. By leveraging reusable assets and optimized processes, Ojas provides affordable, reliable, and innovative IT services that empower companies worldwide to accelerate digital transformation and stay ahead in a competitive market.
View Ojas Innovative Technologies Profile< $25/hr
$1,000+
250 - 999
Santa Clarita, USA
Verified Client Review
Enhancement of Web Development for Network Rollout Initiative
Reviewed by: Shweta Krishna, Project Manager at Tech Mahindra View all 1 Reviews20
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Global IT Solutions
Pratham Software is a global IT solutions company that assists SMEs, Fortune 1000/500 companies, and global ISVs in digital transformation. With over 400 employees, they have 19+ years of expertise and have an average client retention ratio of 4+ years. They offer services in domains like Product Engineering, BPM, Enterprise Application Development, Data Analytics, and BI. They follow ISO 9001:2015 and ISO 27001:2013, and focus on capacity and capability building.
View Pratham Software Profile< $25/hr
$5,000+
250 - 999
Saratoga, USA
19
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Cross Browser Testing Cloud
LambdaTest is a cloud-based cross browser testing platform that ensures web app elements render seamlessly across desktop and mobile web browsers. It supports manual, visual, and automated testing, and can access up to 2000+ combinations of browsers on the cloud. LambdaTest also offers a Selenium grid, supporting 32 test automation frameworks for various programming languages, and a one-click bug logging feature. Key features include Selenium web testing automation, live interactive browser compatibility testing, faster automated screenshot testing, parallel testing for faster market launch, and API for continuous testing.
View LambdaTest Profile< $25/hr
$1,000+
50 - 249
San Francisco, USA
18
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Software Outsourcing Like Never Before
Octos global solutions offers dedicated digital business solutions & projects worldwide to customers from startups & SMBs to Fortune 500 companies. With our extensive expertise in software and application development and our access to both onshore and offshore resources, we are able to provide high-quality development packages that are intended to cut costs and increase revenues. We have the knowledge and methods to suit your demands, whether you need to enhance current applications or create a strong new application. We have some experience with diversity.
View Octos Global Profile$25-$49/hr
$50,000+
10 - 49
Anaheim, USA
18
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
A technology vision with a human touch
Sibedge: Your Premier Partner in Global Software Engineering Solutions Sibedge is a leading software engineering firm specializing in digital transformation and innovative software solutions. With over 15 years of experience, we've successfully completed more than 350 projects across 27+ countries, making us a trusted partner for businesses worldwide. Our headquarters in Australia, combined with a network of skilled engineers globally, positions us to deliver high-impact services tailored to your unique needs. Our service framework is built around agile methodologies, ensuring flexibility and speed in project delivery. We offer five key services that prioritize collaboration and excellence: - Team Extension: Quickly augment your workforce with our remote teams of 3-5 engineers, ready to seamlessly integrate into your existing operations. - Agile Software Development: Experience effective project management that minimizes risks and maximizes business value through our agile approach. - Squads Product Development: Leverage our multidisciplinary squads, including UX designers and quality engineers, for comprehensive product development that drives continuous improvement. At Sibedge, we believe in strong partnerships. Our process includes understanding your needs, building dedicated teams, and managing smooth transitions to ensure your success. Choose Sibedge for your software development needs and watch your business thrive.
View Sibedge Profile$25-$49/hr
$10,000+
50 - 249
Cupertino, USA
18
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
"Where Vision Meets Code"
We provide end-to-end branding, design, and digital marketing services that help businesses build strong, memorable brands. From logo design and corporate identity to user-friendly websites, mobile apps, and performance-driven digital marketing, our team delivers strategic, results-focused solutions. Whether launching a new venture or scaling an established brand, we partner with you to achieve measurable digital growth and long-term success.
View It247 Solutions Profile$25-$49/hr
$1,000+
10 - 49
Livermore, USA
17
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Enterprise Growth Consultants
Technossus is a tech development and consulting company that helps businesses expand by maximizing their operational technologies, boosting sales, and enhancing customer satisfaction. We have been offering top-notch business consulting and enterprise software development services for more than 16 years. We assist global innovators get real-world returns on their technology investments by using data and analytics.
View Technossus Profile$150-$199/hr
$25,000+
250 - 999
Newport Beach, USA
17
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Top-Rated Mobile Application Dev Firm
One of the leading software development and BPO organizations in the globe, Sataware provides worldwide clients with dependable and effective BPO outsourcing solutions. We actually offer 24X7 services because we have offices in the USA & India. Finding the ideal technical partner for Web, mobile, desktop application development, and BPO services can be tough, but Sataware stands out for having a solid set of competencies that can help you accomplish your vision. Basically, the safe, scalable, upward-facing, and trustworthy business systems are the focus of our services. Our most creative information technology and software outsourcing services are built with a focus on addressing the particular needs and objectives of our clients. We publicize our high standards through our inexpensive, trustworthy, and high-quality software services.
View Sataware Technologies Profile$25-$49/hr
$1,000+
50 - 249
Woodbury, USA
17
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Expert IoT Solutions for Scalable, High-Performance Connectivit
Altiux Innovations is a globally certified IoT product engineering company delivering end-to-end solutions for businesses across industries. Our expert teams provide strategic consulting, IoT architecture design, and deployment services, ensuring projects succeed from concept to maintenance. With innovative middleware and connectivity solutions, including our proprietary BoxPwr platform, we simplify sensor and gateway integration, streamline development, and accelerate time-to-market. We offer turnkey solutions, dedicated teams, or flexible hourly support tailored to your budget and project needs. Trusted by clients worldwide, Altiux Innovations combines technical expertise, innovation, and proven methodologies to transform IoT ideas into scalable, secure, and high-performance solutions that drive business growth.
View Altiux Innovations Pvt. Ltd. ProfileN/A
$1,000+
50 - 249
Milpitas, USA
13
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Specialist teams for software, AI automation & BPO
Naqvix is a software development, AI, digital marketing, and business operations agency helping US startups and businesses launch digital products quickly and efficiently. The company develops AI-powered SaaS platforms, web applications, iOS and Android mobile apps, custom CRMs, e-commerce marketplaces, and industry-specific software solutions. Naqvix also delivers AI automation services, including chatbots, AI agents, lead scoring, automated responses, and workflow automation. Its growth marketing and operational support provide businesses with an integrated technology and growth partner. With 200+ projects delivered, Naqvix has experience building multi-tenant SaaS products, real estate and insurance platforms, booking systems, ticketing solutions, and on-demand applications tailored to evolving business requirements.
View Naqvix Profile$25-$49/hr
$1,000+
10 - 49
San Ramon, USA
12
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Technology Service Provider/ SaaS / Custom Web Development/Cloud Solutions/MDM/Databricks
Radixiy is not just an Information Technology (IT) provider; we are strategic and versatile partners in digital transformation. With over a decade of experience and a team of certified experts, we deliver software solutions that are reliable, resilient, and scalable. At Radixiy, we don’t just write code; we build reliable, resilient, scalable, and intelligent software solutions that power business transformation. Our tech-first mindset, agile approach, and deep industry experience make us the trusted partner for startups, governments, and enterprises alike. With a team of experienced IT professionals, we deliver tailored solutions that ensure scalability, compliance, and long-term value. Core Technical Domains Custom Software Development: End-to-end engineering of digital products, including SaaS platforms and enterprise applications/web platforms, API design & systems integration, Microservices architecture, Backend engineering & optimization and Secure, compliant application development. Cloud-Native Architecture: Designing scalable, high-availability systems with a strong focus on auto-scaling, load balancing, and fault tolerance. DevSecOps & Security: Implementation of secure SDLC, identity and access management (IAM), and compliance with global standards like GDPR and ISO 27001. Infrastructure as Code (IaC): Automating environment provisioning and management using tools such as Terraform, CloudFormation, or Deployment Manager. Specialized Platforms Cloud Infrastructure: Expert-level mastery of AWS (Amazon Web Services), Google Cloud Platform (GCP), and Microsoft Azure. Web Platforms: Full-stack development focusing on modern frameworks and responsive design. Containerization & Orchestration: Heavy use of Kubernetes and Docker for deploying microservices. Database Systems: Management of distributed and managed databases such as Oracle, PostgreSQL, MySQL, MariaDB, NoSQL (MongoDB), etc. Support & Maintenance Radixiy’s support and maintenance services are not just an "afterthought" or a helpdesk; they are an extension of their 3R philosophy. IT Strategy & Planning IT Roadmap & Strategic Planning Enterprise Architecture Consulting Technology roadmap development aligned with business objectives. Digital transformation and modernization strategies. IT governance, risk management, and compliance planning & PMO advisory IT Project Management & Implementation CTO / CIO Advisory Services Business Process Optimization Cloud / Infrastructure / DevOps Cloud readiness assessments and migration support (AWS, Azure, Google Cloud). Network architecture and optimization. Server and storage consolidation strategies. Security First Architecture Cost Optimization DevOps, CI/CD, GitOps & Agile Software Delivery Monitoring & Observability Managed Cloud Operations Application & Systems Consulting Enterprise Resource Planning (ERP) system evaluation and support. Software selection and vendor management. Legacy system modernization. Custom Application/Software, Development, SaaS Product Software Architecture & System Integration API Development & Integration, Middleware development, Workflow Automation System Integration Services QA & Test Automation Data Management & Analytics Data Warehouse, Data Engineering Data governance, quality and architecture. Business Intelligence (BI) dashboards and custom reporting. Data privacy and compliance (GDPR, CCPA) Predictive Analytics Dashboard Development Real-Time Analytics Big Data Processing AI / ML Solutions NLP & Conversational AI Training, Support & Maintenance Managed IT Services Application, Software and Infrastructure Support Cybersecurity & Risk Management 24/7 Monitoring and SLA based support Integration & Cloud Support Security Compliance Upgrade, Patch and Security Management IT helpdesk design and process optimization. Employee training on cybersecurity awareness, tools, and workflows. Knowledge transfer to internal teams. Cybersecurity & Risk Management Cybersecurity Consulting Security posture assessments and Vulnerability Assessment & Penetration testing. Policy development and compliance with industry standards (NIST, ISO 27001, HIPAA, CCPA). Implementation of security tools (SIEM,XDR, MFA, endpoint protection). Incident response and disaster recovery planning. Data Protection & Encryption Security Monitoring & Incident Response
View Radixiy Inc. Profile$100-$149/hr
$50,000+
10 - 49
San Jose, USA
11
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Helping businesses grow with modern web development and digital solutions.
BrillMark is a software development and conversion optimization agency specializing in high-velocity A/B testing, CRO support, Shopify and WordPress development, analytics, quality assurance, and custom web solutions. Its distributed team integrates with agencies and in-house teams to launch reliable experiments, improve digital experiences, and accelerate measurable growth for clients worldwide.
View BRILLMARK TECHNOLOGIES P.V.T ProfileUndisclosed/hr
$1,000+
50 - 249
Hayward, USA
11
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Full Cycle Software Mobile App Development Company
Established in 2015, Dreamer Technoland is a renowned company with a bold vision that not only aims to build custom software and web applications but also to achieve your business goals. We are your true helping hand in transforming your dreams and plans into innovative technology solutions that streamline operations, empower growth, and give you a competitive edge. As a budding IT firm, we strongly believe in the power of collaboration, integrity, and innovation, working alongside you to understand your unique needs and craft bespoke solutions that deliver immediate results and long-term impacts. In our 8-year journey, we have been building robust platforms catering to a world of the smartest people across different genres, including automobiles, finance, health care, real estate, and the stock market. With the power of innovation, we aim to deliver intelligent business solutions that give you a competitive edge in a growing market while increasing your overall revenue and minimizing operational costs. Our expertise lies in end-to-end business solutions, data-driven insights, and strategic partnerships. By utilizing the power of modern technologies, we build sound platforms that enable businesses to embrace innovation for optimized growth.
View Dreamer Technoland Profile$200-$300/hr
$10,000 - $50,000
10 - 49
Alameda, USA
11
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Top AI Software Development Services
RemoteState is a software development and AI services company that helps businesses build, launch, and scale digital products without the usual hiring overhead. The company is headquartered in Santa Monica, California, while its engineering operations run out of Noida, India, a structure that pairs US-facing strategy with hands-on technical delivery. Startups working toward product-market fit and established companies modernizing older systems both find a fit here, largely because the engineers involved have shipped real products before, not just studied the theory behind them. RemoteState's edge comes down to focus paired with flexibility. Rather than spreading thin across every possible service, the team goes deep into AI development, app development, and staff augmentation, so the work actually holds up under pressure. Some clients need a fast MVP to validate an idea, others need a full team woven into their current workflow, and RemoteState adapts to both without missing a beat. It's this range, backed by real senior talent, that keeps clients coming back instead of shopping around. Senior engineers only, with no juniors learning at the client's expense Fast turnaround that doesn't come at the cost of code quality Transparent, consistent communication between US and India-based teams Flexible engagement models, ranging from full project delivery to staff augmentation Demonstrated experience across healthcare, fintech, logistics, ecommerce, and edtech AI built into the product itself, not added on as a marketing feature
View RemoteState ProfileUndisclosed/hr
$1,000+
50 - 249
Santa Monica, USA
11
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Building smarter software, stronger businesses, and lasting digital success.
Saguna Consulting - Technology Consulting & Digital Engineering. Our services cover: AI, Custom software development, product engineering, Cloud Consulting, application modernization, Microsoft technologies, Managed IT Services, web & mobile app development, Devops and digital transformation . We work closely with startups & enterprises across various industries, providing them with the most efficient & secure solutions that boost their innovation & rapid growth, enabling them to achieve more in the digital world. Our service includes: Product Strategy, Migration, Implementation & Cloud Managed Services of AI Powered Product Development Solutions, Application Development, And Others.
View Saguna Consulting Services LLC ProfileUndisclosed/hr
$1,000+
50 - 249
Irvine, USA
11
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Custom software development and staff augmentation services
We can take your project at the early pre-seed stage and bring it to millions of investments. We help startups grow: We help pre-seed founders easily grow from 1 developer to a robust startup team. Our goal is to help a startup secure a new round of investment. Quick MVP building: Our product experts will streamline your MVP to the most important features. This allows you to launch rapidly and prove your business case while strategically growing your business to attract new investors. Easy set up: We know how difficult it is to quickly find a development team. We handpick a dedicated team for your project in the shortest period of time. Teams can be fully integrated with project management solutions and adjusted to the client's time zone.
View Emphasoft ProfileUndisclosed/hr
$1,000+
50 - 249
San Francisco, USA
2
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Etymology: Latin, literally, from the egg: from the beginning
Ab Ovo, Inc. is a Santa Clara, California-based IT consulting and staff augmentation firm founded in 2006, providing technology and operations solutions to Global 1000 companies. As a woman- and minority-owned business, Ab Ovo specializes in e-commerce platforms, cloud enablement, IoT, big data, business intelligence, automation testing, and enterprise application development and integration. The firm combines deep technical expertise with an understanding of client industries to solve complex business challenges with speed and agility. Ab Ovo's staff augmentation and software engineering services help organizations quickly scale technical teams while maintaining quality and adaptability to evolving business needs. With operations extending to the UK and India, the company supports clients across automotive, energy, eCommerce, financial services, manufacturing, medical, and retail sectors. Ab Ovo's productized applications and platforms are designed to accelerate digital transformation initiatives, making the company a reliable technology partner for enterprises seeking flexible, innovation-driven IT services and skilled technical talent.
View Ab Ovo, Inc. ProfileN/A
$1,000+
50 - 249
Santa Clara, USA
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
We are changing the world with technologies
MedRec Technologies is a London-based software development company delivering advanced digital solutions to businesses worldwide. With a global team of 60+ software engineers, consultants, designers, and technology specialists across the UK, USA, Europe, the Middle East, and Asia, we provide scalable and high-performance software tailored to modern business needs. Our expertise includes AI and Machine Learning, Big Data Analytics, IoT, Cloud Computing, Blockchain, RPA, Cybersecurity, and SDN-NFV, enabling organizations to accelerate digital transformation. We serve diverse industries such as healthcare, fintech, retail, manufacturing, education, robotics, e-commerce, and transportation. Our core services include custom software development, mobile and web application development, enterprise solutions, automation systems, chatbot development, real-time applications, QA testing, and IT consulting. With a strong focus on innovation, quality, and collaboration, MedRec Technologies helps businesses build reliable, secure, and future-ready technology solutions.
View MedRec Technologies Profile< $25/hr
$10,000+
50 - 249
San Francisco, USA
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Crafting Custom Software & Digital Solutions
InApp is a global software development and technology consulting company specializing in custom web applications, mobile app development, and enterprise software solutions. With offices in India, the United States, and Japan, and more than 22 years of experience, InApp has successfully delivered thousands of projects for startups, SMBs, and global enterprises. Our team combines deep technical expertise with a process-driven development approach to build scalable, secure, and high-performance digital products. We provide end-to-end services including custom software development, web and mobile application development, application modernization, DevOps, QA testing, and digital product engineering. In addition, we help organizations adopt emerging technologies such as AI, machine learning, AR/VR, and blockchain to accelerate innovation and business growth. InApp’s experienced engineering teams work across modern technology stacks including React, Angular, Vue.js, .NET, Node.js, Django, Spring Boot, Flutter, React Native, and native iOS/Android, supported by robust databases and cloud platforms such as AWS, Microsoft Azure, and Google Cloud. Focused on transparency, quality, and efficient delivery, we help businesses build reliable software products faster and more cost-effectively while maintaining world-class development standards.
View InApp Profile$25-$49/hr
$50,000+
250 - 999
Palo Alto, USA
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Your trusted partner for end-to-end software development solutions
Developers Dev is a large-scale software development and IT services company providing comprehensive digital solutions to businesses worldwide. With a team of thousands of developers, the firm offers services spanning custom software development, mobile app development, web development, UI/UX design, AI and machine learning integration, cloud computing, and IT staff augmentation. Developers Dev caters to startups and enterprises alike, delivering scalable and innovative technology solutions at competitive rates. The company emphasizes quality assurance, agile delivery methodologies, and dedicated project management to ensure on-time, on-budget delivery for clients across North America, Europe, and beyond.
View Developers Dev Profile< $25/hr
$5,000+
1,000 - 9,999
San Jose, USA
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