“Just a list of 20 (now 24) little-known tools for the command line — I hope you find something useful that you weren't aware of yet! Use your operating system's package manager to install most of them.”

“plowshare is a command-line application designed for some of the most popular file-sharing websites. Using plowshare you will be able to download files (and for some modules also upload, list and delete) on UNIX-like operating systems:” E.g.: $ plowdown http://rapidshare.com/files/130403982/1989_-_Castellum_honesti.rar

A great cheatsheet.