From time to time people ask about a Windows/Linux alternative (e.g. on the textmate IRC channel).
I'd appreciate it if I could get people to add suggestions in the comments, so that I can refer people to this post when I get the question in the future. Please add as much info as possible (i.e. if it's free/for pay, what's good/bad, how it compares/differs with TM).
Personally I used nedit at the university (unix), but jedit and kate are probably also good GUI editors (on *nix), though I have tried neither.
I have no real experience with Windows text editors. At home (before I got a Mac) I used CygnusEd on the Amiga.
Please do not hijack this post to tell what you would like to see from other text editors in TextMate. It's not that I don't want to hear about this, it's just that it would devalue the usefulness of referring to this post in the future.