Which companies are building hard tech in SoCal?

Hey everyone! I built SoCal Foundry for fun while researching the market for my own deep tech startup. I wanted an easier way to see which companies are building in SoCal and what they’re working on.

It’s a free map and directory of Southern California companies across aerospace, defense, energy, robotics, and advanced manufacturing. I hope it becomes something the local hard tech community finds useful.

Which companies am I missing? And what would make it more useful to you? I’d love for this to grow into a community where founders, investors, and people interested in hard tech can connect. Curious to hear what you think! ✌️