As a developer I have a problem with firefox. I have come to depend on firebug and all the tools, color picker, Dev tools, etc. All these are great. However I find myself in a constant battle. I usually need these tools 1 or 2 times a day but I browse all day. All my cookies, values I typed before, passwords and lots more are in firefox. However, when I run firefox it shows up to using a Gigabyte of memory in no time. When I run it in safe mode it never goes past 400k. So This question is more a request. I don't want to stop browsing in Firefox but that seems to be happening to me more and more often. Firefox has become a tool more than a browser and because of it, it has destroyed its ability to do what it designed to do in the first place. I realize that all the tools i have installed are of my own choosing.

My request though is can't there be a way to instantiate a new firefox where we can select which extensions\plugins run in a selective manner?. Each browser would still have all the data I need (cookies, passwords, auto-fill, etc.) but one would only have the plugins\add-ons I need for what I am tasking .If I am browsing I don't need my dev tools. Posting from Chrome right now...