TextMate

Synopsis
From http://macromates.com/ :

"TextMate brings Apple's approach to operating systems into the world of text editors. By bridging UNIX underpinnings and GUI, TextMate cherry-picks the best of both worlds to the benefit of expert scripters and novice users alike."

Features
See http://macromates.com/.

System requirements
Mac OSX only. Version 2.0 requires Leopard.

Source code and licensing
Closed source. License (39 euro) is user-specific so can be used on multiple computers by that user. Group and student discounts available. See http://macromates.com/license_policy.

Support for TEI
None in particular.

Language(s)
Interface and documentation in English.

User community

 * http://macromates.com/community
 * http://macromates.com/wiki/Main/HomePage

Current version number and date of release
1.5.5 (YYYY-MM-DD)

How to download or buy
http://macromates.com/

Additional notes
When used with http://www.ditchnet.org/texmlmate/, makes a fully functional XML editor.