Jack Lhasa kindly recommended this Ubuntu application. You can hear more from Jack, including an interesting article about combining GTD and Tomboy, over at Loki Listens.

You can recommend your favorite Ubuntu application too! Send me your name, your suggestion, and your web address, and I'll get you on!

Tomboy is a dead simple note-taking application. It's a lot like sticky notes without all of the clutter and resource-draining. The application lives in your task bar, and you can easily add, link together, and search through notes really easily. The text formatting includes highlighting, spell-check, and bullet point lists; you can even instantly create new notes by clicking on words that LookLikeThis.

For me, though, the best part is all of the plug-ins that are included. Plug-ins exist to show backlinks, to integrate with Bugzilla and Evolution, and to automatically create a 'Note of the Day' to collect your daily thoughts. Best of all, you can use a plug-in to import notes from the Sticky Notes applet.

Tomboy is included with the operating system as a part of GNOME; if you don't have it installed, you can do it in the usual manner. Fire up the terminal and type:

sudo apt-get install tomboy

...and launch Tomboy from the Application --> Accessories menu.