Write-on Video - The Video Editor for Storytellers. Create Storyboards, Edit Video, and Make an Impact.
ezgif.com - Ezgif.com is simple online gif maker and toolset for basic animated gif editing.
Filma - Edit video like a pro easily and everywhere with your iPad
Instagiffer - Create GIFs from anything!
Velapp - Edit video as you shoot
Gifsicle - Gifsicle is a powerful, simple command line tool for creating, editing, and optimizing animated GIFs.