# Tilde Black Documentation The purpose of Tilde Black is to collaborate on the subjects of privacy, anonymity, and security. The documentation contained here is a direct output of that collaboration. All documentation is kept in [version control](https://tildegit.org/tilde.black/tilde-black-docs) and can be edited and improved by pull request. ## Join Tilde Black If you would like to join our [tilde](https://tildeverse.org) community, you may sign up for the public access unix system by [following the guide](sign-up)