As with Firefox, there's a wide range of plug-in applications available for the Thunderbird mail reader. Leet Key will translate your e-mail into either L337 speak, ROT13, or several other useful formats. Russ Key takes Russian words typed phonetically with a roman alphabet keyboard and translates them into proper Cyrillic. Enigmail handles all of the OpenPGP encryption so that you can scramble your communications. For more details on each app, read our full story.
This story, "Top 10 open source apps for Mac OS X," was originally published at InfoWorld.com. Follow the latest developments in open source, the Mac, and Mac OS X at InfoWorld.com.