GIF Resizer - Create animated GIFs and resize GIFs too big to tweet!
GifJif - Turn GIFs into masterpieces.
GifLab - The easiest way to create GIFs on your iOS device
Giphy - Search all the gifs and make your own animated gif
Cast - Record, edit, publish, and host your podcast
ResizePixel - Free image editor to crop, resize, flip, rotate and convert images online