Tuxman, in that list of 5 programs, it looks to me like #1 (Unpacker) will do what you are asking. What doesn't it do?
Another one that I know of is called PAR Buddy. However, it focuses more on PAR funcionality than archives. Meaning, it does watch folders and extract the archives, and deletes the archive files. However, if the archive doesn't have PAR files, i don't think it extracts. I also don't think it works with zip files.