Southern California's
Startup Directory
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Early StageCosight builds always-connected telehealth devices — cellular- and satellite-ready — for video consultations and remote patient monitoring, with real-time translation and integration with FDA-approved medical devices, aimed at hospitals and healthcare providers.
Pre-Seed$250KBetter, faster tech vendor research
Series D$833.1MWe provide efficient in-space mobility that moves payloads from low Earth orbit to any destination. Our vehicles deliver rapid, reliable access, reducing costs and timelines to make space operations feasible for commercial, government, and scientific missions.
Series C$80.1MOutpace AI-driven attacks. Unify Digital Risk Protection, Human Risk Management, and Email Security to stop digital threats before they scale, empower your teams to lead your defense, and scale your SOC with agentic AI.
EXPLORE BY CITY
WHAT SOUTHERN CALIFORNIA BUILDS
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.
Seed$800KViroMissile is developing the world’s first truly intravenously-delivered viruses that target and kill tumors.
Seed$800KMirae Creative is a small mobile app development shop with a live Google Play app, Quick Pass Generator.
Seed$800KExperience high-energy HIIT workouts & group fitness classes in California & Texas. Training Mate blends fun, intensity & results for every fitness level.
This is a special-purpose investment vehicle tied to Crosscut Ventures, a Santa Monica VC firm that has shifted its focus to frontier technology investments in space, defense, and energy transition.
Series A$774KSafeguard your digital memories with Kwillt. Securely store and share photos, videos, and stories with your family for generations.
$773KTerafiber was founded by Jim Hanley, a San Diego fiber-infrastructure entrepreneur who had previously founded Netly Fiber, another citywide fiber-network builder, before starting Terafiber in 2023.
$770KMobile fundraising platform for nonprofits with compliant text messaging, Text-to-Give, and donor engagement. Trusted by 1,000+ organizations.
Seed$770K