The 4.5.2 version of AutoUnpack is available as a free download on our website. This free software is a product of See-and-Be.com. The program lies within System Utilities, more precisely Archivers.
From the developer:
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.
You may want to check out more software, such as SFV Checker, AlphaZIP or UnPacker, which might be related to AutoUnpack.