Six Updater is a tool to manage Mods, Missions & Servers, for the ArmA2 military simulation by Bohemia Interactive.
The application is written in IronRuby, which is the Ruby language on Microsoft .NET, with a small portion of C#
and deploys Rsync and Zsync to perform download/update tasks, which provides differential updates (delta patching) to save bandwidth (for hosters and downloaders) and time.
