TextForge is a text editor for Mac OS X, written using the Cocoa API. TextForge was built from scratch to provide a reliable, powerful, fast, efficient, and Mac OS X native solution for editing text documents. Some highlights are:
Tools like...
Advance search and replace capabilities with full regular expression support
Integrated perl syntax checker
"Run in Terminal" command
Customizable "Preview-in-Browser" system
Document statistics
Control over tabbing
Auto-indent
Control over line breaks and encodings
Spell Checker
Wrapped and unwrapped view modes
Shows line count and position
Customizable look (colors, transparency, fonts)
Mac OS X native interface utilizing sheets and following the Apple Human Interface Guidelines