Mac: iTerm 2, our favourite terminal emulator for Mac, updated today with a lot of handy new features. These include support for triggers and a toolbelt feature.
The new toolbelt gives you a place to take notes, shows your paste history and shows all your running jobs. The new trigger features makes it so you can set it up so errors are highlighted in red, a dock icon bounces, or so that prompts are responded to automatically. Finally, there's also a bunch of new customisation options, automatic profile changes and a bunch more other improvements.
iTerm 2 (free)