dtrx: Intelligent archive extraction

http://brettcsmith.org/2007/dtrx/

dtrx stands for “Do The Right Extraction.” It's a tool for Unix-like systems that takes all the hassle out of extracting archives.

This works really well for just extracting every kind of archive on Linux.  It has good options for things like creating a folder if the files inside are all at the top level (so you don't end up with 100 files in whatever folder you are working in).  Works well as a shortcut in whatever file manager you are using.