colorizing
Most developers, myself included, are content with syntax coloring schemes that are fairly close to Visual Studio's default of black text on a white background. I'll occasionally encounter developers who prefer black backgrounds. And I've even seen developers who prefer the white on blue
javascript
When I visited Alex Gorbatchev’s blog, I noticed he had a unique client-side code highlighting solution in place, one I hadn’t seen anywhere else. That’s something I’ve wanted on my blog for a while; the vanilla <PRE> sections I’ve been using are serviceable,
.net
For quick and dirty HTML syntax highlighting, have you tried the Squishy Syntax Highlighter? By way of demo, here’s a little CRC32 routine I scavenged last year. Update 3/05: I am using client-side JavaScript highlighting. I noticed that VS.NET automatically translates the IDE highlighting into the RtfTextBox
text editors
I use notepad.exe dozens of time a day. Given the severely limited functionality of Notepad, it's incredible that it has taken me this long to find a suitable replacement for what is, evidently, a core part of my developer toolkit. Check out Notepad2: The original Notepad shipped