Not sure these count as non-social

GitHubstr
StackOverflowstr
Kickstartstr

I'm working on bridging git with nostr 

https://swarmstr.com/ has the stackoverflow look and feel on the way, kinda

https://geyser.fund/ has the Kickstarter thing working

https://gitworkshop.dev/ and some other projects are trying to create a GitHub like experience

So I'm super pumped to see what will be available in the next years