I think you should add Geany to your "Free Text Editors" section.
Great little light weight IDE which works on Windows & Linux, and covers loads of syntax (No idea what the plural of that is).
Anyway, used to use Notepad++ but once I started working on Linux at work I moved to Geany. Which after a few days also replaced Notepad++ on my home (Windows) machine.
http://www.geany.org/