Tab overload and its performance impact on system is a big annoyance most Firefox users experience, While there have been Firefox extensions like TooManyTabs to get rid of this tab-overload but none actually addressed the problem in a more practical way then the brand new Firefox addon Cluster Tabs for Firefox does, the addon allows users to easily create and save group of Firefox tabs as clusters unloading them from memory allowing easy retrieval later-on.

The best part is that every cluster has a unique anonymous cluster URL which can be shared with friends and published on internet like this.