“Groovy Motherfucker”

Free open-source simple UML editor that plugs-into Eclipse. Recommended by co-workers.

IDE built on top of Eclipse (and available as an Eclipse plugin) that aids in the coding of HTML, CSS and JavaScript. The code-completion tooltips showing you which browsers understand which keywords looks dead handy.

RSS feedreader plugin for Eclipse. Piping FogBugz’s RSS feeds into this will make it easy to keep track of my bugs in the IDE.