GitKraken - The intuitive, fast, and beautiful cross-platform Git client.
MkDocs - Project documentation with Markdown.
SourceTree - Mac and Windows client for Mercurial and Git.
GitBook - Modern Publishing, Simply taking your books from ideas to finished, polished books.
GitHub Desktop - GitHub Desktop is a seamless way to contribute to projects on GitHub and GitHub Enterprise.
Docusaurus - Easy to maintain open source documentation websites