These repositories listed below, as well as a few others, can be found here on GitHub.
beyond-origins: RPG written in from scratch
pegasus: Lightweight, simpler alternative to Wikipedia
Alternative to Twitter
Gab is what Twitter never was; a social network free from censorship and the place where anyone can say anything, expressing their constitutional right of free speech.
The "alternative" social network was created in response to evident censorship of conservative accounts and media on Twitter. Gab is open to everybody - it’s a place for anyone to speak their mind without fear of censorship. As put by gab’s CEO and co-founder, Andrew Torba, “What is free speech if we don’t have the ability to offend people?”
Speak freely on gab.com