Notepad ++ is a truly amazing software which is very useful to me for more than 2 years. Its usages rage from a text editor to a source code editor with lot of rich text options. It doesn’t ‘eat’ your CPU power like many other rich text editors and with every new version it’s getting more powerful keeping the simple core design.
Notepad ++ has a very rich plugin library as well as good documentation and supportive forums
Moreover, I like the Chameleon J