Aerospace startups in San Francisco

Aeolus

San Francisco

harmonizing chaos

Sorcerer

San Francisco

Sorcerer builds a global network of persistent airborne sensors to improve weather forecasting; its system is used daily by meteorologists to track extreme weather across the US and Central America, led by a team with Urban Sky and SumUp ex

Metalware

San Francisco

Metalware develops advanced firmware security solutions for real-time embedded systems, safeguarding aerospace, automotive, industrial control, telecom, medical devices, and IoT from cyber threats.

Astranis

San Francisco

Astranis designs, builds, and operates high-orbit satellites to expand humanity's reach, serving enterprises, governments, and U.S. military with secure networks; five satellites are in orbit, with $1B in backlog and $750M raised from inves

Enhanced Radar

San Francisco

The company develops safer aviation systems with a focus on next-generation air traffic control, aiming to advance aviation safety by delivering modern ATC solutions and defining its work in the aviation technology sector.

Volansi

San Francisco

**Autonomous VTOL delivery solutions.** Volansi builds and operates high-payload long-range unmanned aerial vehicles to service B2B customers with a point-to-point delivery solution that saves them millions of dollars in down-time costs.

Dalus

San Francisco

Dalus develops AI-powered software that makes hardware design feel like software development, targeting aerospace, robotics, and defense. Founded in 2024 by Eliot and Sebastian, it has revenue and completed YC W25.

Entangl

San Francisco

Entangl uses AI to autonomously detect design errors in data center engineering and operations, delivering targeted solutions to engineers. Founded by Shapol and Antanas, ex-reusable rocket program leaders, Entangl aims to save time, reduce

Astro Mechanica

San Francisco

Astro Mechanica is a fast-growing aerospace startup aiming to reinvent supersonic aircraft. Describing itself as an engineering collective, it innovates on engines, airframes, and systems untouched for over 50 years, targeting advances from

Spaceium

San Francisco

Spaceium Inc, a YC S24 startup, is building space stations to refuel and repair spacecraft. It has multi-million-dollar contracts, plans a soon-to-fly demo mission, and secured one of the largest seed rounds in YC S24, signaling strong earl