Tomboy Notes -Simple note taking

Tomboy is a desktop note-taking application for GNOME. It is simple and easy to use, and allows you to organize the ideas and information you deal with every day. Tomboy has some very useful editing features to help you customize your notes, including:

• Highlighting Search Text
• Inline Spell Checking
• Auto-linking Web & Email Addresses
• Undo/Redo Support
• Font Styling & Sizing
• Bulleted Lists

Tomboy is by default installed in Ubuntu. You can find it in Applications -> Accessories -> Tomboy Notes

Some useful links on Tomboy.

Tomboy official site

Tomboy download

A screen shot of article being written in Tomboy. Notice the highlighting and the WikiText.