I've been using EmEditor for at least 4 years. Initially it was for administrative scripting, but after my favourtie HTML editor (HomeSite) went on the backburner at Macromedia, I started using it for everything. ANd I've never looked back.
Not sure how long the free version has been out, but it's well worth a look. Get it from http://www.emeditor.com/download.htm.
Version 6 should be out soon, with some cool new features. The 'snippets' feature has been a long time coming!