Textastic for Mac OS X
Textastic, the fantastic iPad text editor is now available for the Mac.
The app packs in support for 80 source code and markup languages, iCloud auto-save and OS X's Versions. Built with the ability to import syntax definitions, themes and templates from TextMate, moving to this text editor should be pretty seamless for many users.
It's on sale for just $2.99 on the Mac App Store.