TerminalRun and FoxRunner are two similar Firefox extensions for running a command from a website in a terminal. Because FoxRunner didn't work for me (but it seems to be working for most people so you can try it if you want), I'll review TerminalRun.

Here is a video I've just recorded with TerminalRun in action:

Music Player Minion is a client for MPD (Music Player Daemon) which comes as a Firefox extension. Think of it as something like Theory (web based MPD client) but which looks a lot better.

Music Player Minion is a client for the Music Player Daemon network music player. The purpose of MPD and it's clients is to allow music playback on one PC (such as a home media server) to be controlled from another over the network.

Music Player Minion has 3 possible "views":