Top California App Development Startups (66)

Sortly is the simplest inventory platform for business and teams to stay on top of their stuff. Our visual system enables business to easily track what they have, where it is, and who has it. Anytime, anywhere, on any desktop, tablet or mobile device. Sortly is trusted by tens of 1000’s of small businesses and teams at large enterprises including HP, Honeywell,...

WorkWhile is an AI-powered next generation labor platform that helps businesses in light industrial, hospitality, and events achieve over 90% fill rates and reduce no-shows through AI and predictive machine learning. We ensure seamless shift execution with trained, on-demand workers supported by on-site leads, real-time performance monitoring, and a robust accountability system. Our worker-first model boosts retention through benefits like...

As the trusted choice for digital agencies, SaaS platforms, and web professionals, Duda powers over 1 million websites worldwide. Our platform offers a comprehensive suite of tools that enable users to efficiently create pixel-perfect, feature-rich websites at scale.

Doodle Labs designs and produces industrial-grade wireless networking solutions. The company focuses on mesh networking for robotic systems, providing high throughput, long-range Mesh Rider solutions for UAVs, UGVs, AMRs and other robotic applications. The company’s Helix Mesh Rider Radio was developed with sponsorship from DIU and is the Blue UAS program’s datalink of choice. Doodle Labs was named one of Fast...

Warp began with the vision of reimagining one of the fundamental dev tools—the terminal—to make it more usable and powerful for all developers. As AI has advanced, Warp has evolved beyond its terminal roots into the platform for Agentic Development: a workbench for dispatching agents to code, deploy, and debug production software. With over half a million active developers and revenue...

Bee Techy is a top-tier, remote-first software development agency that builds high-quality digital products with precision, speed, and reliability. We specialize in web and mobile development, AI-driven solutions, and end-to-end engineering support for startups and fast-growing companies. Our team delivers clean, scalable, and production-ready systems that help businesses move faster and innovate confidently. As a growing engineering team, we’re actively hiring...

Moburst is a full-service mobile-first digital agency that propels companies into category leaders through AI-powered marketing. Our methodology is driven by a proprietary AI program, with dedicated experts embedded in every department to pioneer intelligent solutions that deliver unparalleled client growth. Trusted by global leaders from startups to enterprises like Google, Uber, Samsung, and Reddit, we deliver end-to-end results across the...

TechGropse is the world’s leading digital solution provider, with its headquarters in Atlanta, we also have branches in Chicago, Houston, Dallas, Los Angeles, San Francisco, New York City. Our dream is to provide all the possible and latest solutions to small businesses and enterprises. As a leading leader in the field, we have redefined digital possibilities for nearly a decade...

Ropstam is a leading Canadian IT solutions company staffed by a team of skilled professionals in web and mobile app development, UI/UX design, and blockchain development. We specialize in providing comprehensive software solutions and services, expertly handling complex projects to deliver outstanding results for our clients. Check out our services at: https://www.ropstam.com/services/ For 13+ years, Ropstam has been a leading innovator in...

Think Partner, Not Agency Acquaint Softtech is a global engineering partner helping agencies, SaaS founders, and enterprises scale their development capacity with vetted remote developers. We provide dedicated Laravel, MERN, MEAN, Python, WordPress, WooCommerce, Statamic, Bagisto, DevOps, Project Managers, and full cross-functional teams starting at competitive hourly rates. As an Official Laravel Partner with a 70+ in-house engineering team, we deploy fully...

1stMILE (formerly Merchant Partners) is a software technology company based in Redmond that provides a consumer driven commerce platform to businesses in the automotive marketplace. We have more than 12,000+ locations using our 1stMILE software to process payments and increase revenue via our integrated solutions.

We make Voloco, a voice processing app with over 60 million downloads. The best place to hear what people have done with Voloco is our Instagram account: https://www.instagram.com/volocoapp/

Proleadsoft is an award winning and 5-star rated software, web and app design, development, and digital marketing firm based in the San Francisco Bay Area.

Create compliant healthcare apps quickly Medplum is a powerful, open source healthcare data platform built by industry veterans.

Web Design Mechanic is a creative digital agency that specializes in custom web design, web development, mobile app solutions, branding, animated video production, and digital marketing services like SEO, PPC, Social Media Marketing, and content marketing for businesses across the USA.

MojoTech is a 100% US-based software development company that integrates strategy, engineering, and design to create results-driven digital products and experiences. We've written the playbook for how to discover, define, design, and build tomorrow's innovations, empowering companies to unlock future market potential, maximize returns on innovation, and drive transformational change.

FAR.AI is a technical AI research and education non-profit, dedicated to ensuring the safe development and deployment of frontier AI systems. FAR.Research: Explores a portfolio of promising technical AI safety research directions. FAR.Labs: Supports the San Francisco Bay Area AI safety research community through a coworking space, events and programs. FAR.Futures: Delivers events and initiatives bringing together global leaders in AI academia, industry...

Whether you require assistance with Web development, App Development, and software test services, our team of experts has the knowledge and expertise to ensure that your applications meet the highest quality standards.

Prehab is a pioneering digital health platform dedicated to transforming how people access physical therapy. We believe proactive healthcare should be the standard, not just reactive treatment. Through our three core services, we make high-quality movement and musculoskeletal care more accessible than ever. 1️⃣ [P]rehab App – A direct-to-consumer mobile platform that provides evidence-based exercise programs, empowering users to manage pain,...

We're Owting, a pre-seed Los Angeles-based startup on a mission to combat loneliness and isolation in the digital age. Our mobile app is designed to help people connect with both old and new friends in meaningful ways. We believe that genuine in person human connections and community are the key to a happier and healthier life.