AutoUnpack is a freeware utility that can be used to automatically download, repair, and unpack all RAR-, 7z-, zip-, TS – archives, or splitted files (e.g. *.001). Which is especially useful for usenet binaries.

Normally people will start QuickPar while downloading (or afterwards) to verify whether the downloaded files are complete and to repair them if necessary. Then it is time to extract the downloaded files with WinRAR or 7-Zip . Finally they will delete the RAR and PAR files. So a couple of actions have to be performed by the user. AutoUnpack can automatically do this for you.

http://www.see-and-be.com/AutoUnpack