Lightbeam for Firefox - Mozilla is the not-for-profit behind the lightning fast Firefox browser. We put people over profit to give everyone more power online.
Firefox Advance - Experimental recommendation engine built into Firefox
island - a free and opensource alternative to parellel space
Actually Read It Later - Save articles for reading later
Tree Style Tab - Tree Style Tab is an all-in-one Firefox extension that provides ability in order to operate tabs as a tree.
ShareIt by SocialPilot - Free Content Curation and Influencer Discovery Tool