AGfUPX is a nice GUI for UPX with many advantages. Selecting a file using drag & drop, shell integration (adding "Open with AGfUPX" option to the context menu of exe/dll files) and redirecting UPX output to a windows dialog box are only few of them.
DOSConf is an installer to install, update, repair, remove and create installation and patch package. It will be developed for DOS / Win32 platforms and in the future for another operating systems, like Linux.