Tweeig - Repost any tweet to Instagram or other social media
ezgif.com - Ezgif.com is simple online gif maker and toolset for basic animated gif editing.
Twiger - Share tweets on Instagram
Gifox - Delightful GIF Recording and Sharing App for macOS
TweetPik - Easily convert tweets to images SVG, PNG and JPG
Instagiffer - Create GIFs from anything!