I've been doing some research for a new project I'm working on, and I figured I'd call upon the fine users here in the hopes that some of you might have some good resources I could grab. Basically, I am looking for information on creating Add-ons for browsers. Mostly FireFox and IE. Most importantly at the moment would be FireFox, as I can work up a proof of concept for investors quicker than IE I'm sure.
So, while I continue searching Google, maybe you can throw me some sites/docs/books/etc that you've personally found useful. While Google is great, knowing that X-article worked for certain people will go a long way, I'm sure.
Project Research for Browser Add-ons
Moderator: General Moderators
Hey, long time no see 
Take a look at the "Developer Resources" at http://www.mozdev.org/docs/
esp. http://developer.mozilla.org/ and http://www.xulplanet.com/
Take a look at the "Developer Resources" at http://www.mozdev.org/docs/
esp. http://developer.mozilla.org/ and http://www.xulplanet.com/
ActiveX plugins for MSIE
So you'll be looking at the Windows Shell API and C for creating those. FireFox is 'easier' in terms of the FireFox application was built with plugins and toolbars in mind, and of course an open-source community to back it. IE of course suffers from the usual closed-source difficulties (and not to mention MS difficulties.)