I've been using HTML-Kit for at least 10 years and now they have HTML-Kit Tools which is a more sophisticated editor. But they're set up so you can go between them for the different features. They're both 'colorized' and support HTML, Javascript and several other languages. HTML-Kit is a free download but I liked it so much I paid for it and HTML-Kit Tools. PSPad supports a lot of programming formats and languages too in it's colorized formatting. On Linux, I've been using Bluefish. I found a page on my computer recently that I had written years using NetScape Composer...
IDE? What does that mean?