Southern California's
Tech
Startup Directory
Showcasing Southern California's innovation, one startup at a time. Every funded and bootstrapped company, from seed round to first dollar of revenue, tracked as it happens.
Includes SEC Form D filings from the last 3 years, plus all-time totals for companies sourced from YC and news coverage.
Artificial Intelligence
The region's largest single cluster by company count — AI and machine learning threaded through nearly every other industry here, from defense to biotech to entertainment.
Aerospace & Defense
Home to SpaceX, Northrop Grumman, and a new wave of hypersonics and space-infrastructure startups.
Entertainment & Gaming Tech
Hollywood's production infrastructure, live events, and a growing games and creator-tools scene.
Semiconductor Hardware
Qualcomm and Broadcom anchor a chip-design cluster spanning the region.
Medical Technology
A deep biotech research base and a growing bench of medical device and diagnostics startups.
B2B
Business software and services sold to other companies. The largest single category of startup across Southern California, spanning sales tools, vertical operating systems, and everything in between.
Industrials
Manufacturing, hardware, and physical-world operations. Overlaps heavily with the region's decades-old aerospace and defense manufacturing base, now extending into robotics and automated production.
Consumer
Products and apps built directly for individual consumers, drawing on Southern California's media and entertainment base.
Healthcare
Health tech, medical devices, and healthcare services, backed by a decades-old biotech research base and a deep bench of clinical and diagnostics startups.
Fintech
Financial technology: payments, banking, investing, and financial infrastructure.
Education
Education technology and learning platforms built across Southern California.
Real Estate & Construction
Property technology, construction tech, and real estate services.
Series B$18.5MPaulex Bio stands at the threshold of what could be a transformative breakthrough for type 1 and type 2 diabetes: beta cell regeneration through an oral medicine designed to eliminate the root cause of diabetes.
Series B$17.8MIts co-founders include one of the founders of Kite Pharma, which was acquired by Gilead for $12 billion.
Series B$17.8MCo-founded in 2019 by three former Casper executives (Terri Rockovich, Sameer Mehta, Michael Kim); its investors have included actor Will Smith.
Series B$17.5MSift is the unified observability platform for mission-critical hardware—ingest, store, and analyze telemetry at scale across aerospace, defense, and robotics.
Series B$17.1MAristaMD empowers primary care providers with excellent specialty care - improving patient outcomes with timely, cost-effective access.
Series B$16.8MLiveOne (NASDAQ:LVO) is a global digital media company dedicated to music and live entertainment. LiveOne powered by Slacker Radio is your home for music, podcasts, and more featuring Dolly Parton: DNA, Weezer: The Count Up, Album of the Week, The Magnificent Others with Billy Corgan, Hip Hop/R&B Hits
Series B$16.7MFictions is a game developer and publisher established in 2025. Current titles include LEGO Party and Beast of Reincarnation.