SolutionBackup is a VisualStudio 2003/2005/2008 addin which allows to create a ZIP backup of your current solution. The backup will contain only projects source files, excluding .DLL, .EXE, .OBJ, etc. Creating a backup of current solution is easy, and it's done directly inside VisualStudio: right-click on the solution and select "Backup solution...".
SolutionBackup main dialog appears, showing files which will be included in backup. Here you can choose a new backup filename/folder.