A kind and amazing hacker collective centered in Minnesota, with global friends. In addition to being a group of hackers working on stuff, they're also a non-profit co-op that provides email, Matrix, Tor, and VPS hosting.
Their hosting service is called Capsul (https://capsul.org/)
A collective that's building F/OSS medical equipment and synthesizing important pharmaceuticals. Presented at HOPE about torrenting drugs and medication.
Hiddenservice: http://ga5wrpojaen4lhedpp2ccbps2gzdt5kxtyvqwr364jji53oqjbsbdvyd.onion/
Homepage for a martial arts dojo down by Lake Merritt in Oakland. Consider paying them a visit to take classes. Payment on a sliding scale. Three styles taught: jujitsu, aikido, and battodo.
A collective aimed at activists that uses only OSS software and federated or decentralized software. Offers services that you can request accounts on or set up your own server and federate with them.