Microsoft Office Excel - Microsoft Office Excel is a commercial spreadsheet application.
GitHub Desktop - GitHub Desktop is a seamless way to contribute to projects on GitHub and GitHub Enterprise.
Google Sheets - Synchronizing, online-based word processor, part of Google Drive.
Mercurial SCM - Mercurial is a free, distributed source control management tool.
EtherCalc - EtherCalc is a web spreadsheet.
Git - Git is a free and open source version control system designed to handle everything from small to very large projects with speed and efficiency. It is easy to learn and lightweight with lighting fast performance that outclasses competitors.