Even if archives are old fashioned by our current standards regarding a computer, they are not old enough to be neglected by users. You still download archives off the Internet when you look for something, and you might lose time extracting it. As time is precious, you will benefit from a tool that does it instead of you.
AutoExtract monitors downloaded files from the Internet and when it detects a new archive, it autmoatically uncompresses it into an output folder that has the same name as the archive. This is a good way to automatically organize yourself regarding time, space and folders.