WAD Mangle 2.0

WAD Mangle is a WAD file lump editor, released under the GNU GPL.Currently WAD Mangle is restricted to Microsoft Windows only (that should hopefully change in the future), and requires that .NET 1.1 is installed.
WAD Mangle allows WAD files to be loaded and the lumps inside them to be edited and manipulated. It does this using a standard multiple-document interface showing each loaded WAD file in a separate window, and allowing lumps from other loaded WADs and files from Explorer to be dragged and dropped into the WAD file.
WAD Mangle also allows an easy use of plug-ins -- plug-ins can be written using the WAD manipulation routines used by WAD Mangle itself when written in a language that can use and generate .NET assemblies. Since version 2.0.0 you can also use external executables as plug-ins, allowing you to use any language you desire.
Or, obviously, for that matter feel free to take the WAD code and use it in any project you desire as it is self-contained in an .NET assembly.