"When art critics get together they talk about Form and Structure and Meaning. When artists get together they talk about where you can buy cheap turpentine." - Pablo Picasso
In the awesome ALT.NET Israel conference we had a flipchart where people added their favorite tools.
Check it out, and try to guess what my contributions were. (Hint - if it smells of non-.NET-and-windows-land, it's probably me :)
I should have mentioned zsh explicitly as well, but I forgot.