Sosha is a .NET/C# program that tracks changes in files across any number of directories and saves a backup copy whenever they are changed. Specifically, the purpose of the application is to monitor source code as you edit it, making any changes undoable.
phpEditMe is a light-weight web-based editor for websites, documentation, and source code. It includes a file manager, a WYSIWYG HTML editor, a backup system, and can (optionally) enforce the formatting of Dreamweaver templates.
A CVS with simple architecture and easy interface. Use to sincronize automatically a directory, project or for backup. Works in any OS with Perl. FEATURES: web access; client/server; protocol compression; own chksum; Web Admin.
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hostingstar.com.au's open source software.
To be used primarily for dotnetnuke modules, a cross platform backup system, .net (dotnet) user controls, 3d plugins and many other bits and pieces.