As a developer I am always on the look out for new tools. At any one time I would normally have 4 different browsers on my machine, and switch between them as I do my testing.
I have always been a Firefox fan, but switched to Chrome Canary a while back. I use Canary as my primary browser, sometimes even using it as my developer IDE.
This morning I woke up to find that Firefox have released a developer addition of its browser.
It may be work taking a look at. For those interested, here is a link: https://www.mozilla.org/en-US/firefox/developer/