MakeUseOf: One great thing about Firefox 4, that I couldn’t say about previous versions of the browser, is that there is now support for restartless add-ons. Not sure what a restartless add-on is? It’s exactly what it sounds like. Restartless add-ons can be installed, uninstalled, disabled, enabled, and upgraded without you having to close all your tabs and restart Firefox.
In this article, I’ll take a look at some of the best restartless add-ons out there so you can start incorporating them into your browsing habits.