Vine Camera - Vine Camera is one of the best video editing application that allows you to make 6-second looping videos and post it directly to Twitter, Facebook, Instagram and all the other social platforms.
animatedTabs - Chrome extension showing an animated GIF on every new tab
Giphy For Gmail - Add the power of GIFs to your email
GifCities - The retro animated GIF search engine
Coub - Coub is an app that features GIFs, but the GIFs that you select and send to other people have sounds.
GIF GIV - Make your Product Hunt thumbnail stand out with a custom GIF