Wurst- 2 used ForgeWurst for its UI, Settings and Saving. ForgeWurst: https://github.com/Wurst-Imperium/ForgeWurst
This is a cut down version of Wurst- 2 used to upgrade its backend and test the changes without effecting main branch and allow the modules to be upgraded to use the changes.
Not entirly cleared of junk was used to apply a client wide changes.