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

Geyser | Bitcoin Crowdfunding Platform

A Bitcoin crowdfunding platform where creators raise funds for causes, sell products, manage campaigns, and engage with their community.

has the Kickstarter thing working

GitWorkshop.dev

Decentralized github alternative over Nostr

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