Attached Link: http://vim.sourceforge.net/

gVim, esp. if you add Dodger's Poser Syntax checker.

It's essentially Unix Vi but with a GUI so you don't have to learn every arcane command to use as a normal editor. But the full power of Vi is there - including scripting - whenever you need it. And FAST! It loads multi-MB files instantly.

And Dodger's Poser syntax script poser.vim) displays all Poser syntax color coded. And a similar feature for Python is built in.

Price is right too - $0.00.