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.
InVideo.io - Create thumb-stopping videos in mins for just $10/month even if you've never edited a video before!
Giphy For Gmail - Add the power of GIFs to your email
Impresso - Create beautiful promotional social videos with your iPhone
Coub - Coub is an app that features GIFs, but the GIFs that you select and send to other people have sounds.
Lumen5 - Smart social video creator for your business