Simple freehand frame to frame animation.
Free with limitations
2D graphics tool that allows you to create animations, graphics and documents. Based on drag an drop and simple to use.
An editor for images, gifs and videos designed mainly for the web, it also has some video utilities: editing, subtitles, filters, effects, stop motion and more.
Create animated gifs by an image giving a cubist effect (some settings are possible). The rendering takes a few minutes. Save the image with right click or drag it on desktop ;)
Manipulate GIFs (but not only) as you want: you can create them from a sequence of images or videos, cut them, resize them, optimize them or apply different effects.