GitKraken - The intuitive, fast, and beautiful cross-platform Git client.
Microsoft Word - Microsoft Word is a commercial word document processor for Windows.
GitHub Desktop - GitHub Desktop is a seamless way to contribute to projects on GitHub and GitHub Enterprise.
LibreOffice - Writer - Open-source cross-platform word processor.
SourceTree - Mac and Windows client for Mercurial and Git.
Google Docs - Create a new document and edit with others at the same time -- from your computer, phone or tablet. Get stuff done with or without an internet connection. Use Docs to edit Word files. Free from Google.