PopKey for Desktop - Quickly share ridiculous GIFs from Mac or Windows
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.
Vlipsy - Easily add your favorite video clips to any conversation.
island - a free and opensource alternative to parellel space
Giphy For Gmail - Add the power of GIFs to your email
Tree Style Tab - Tree Style Tab is an all-in-one Firefox extension that provides ability in order to operate tabs as a tree.