ScreenToGif: Screen, webcam and sketchboard recorder with an integrated editor (screentogif.com)

I've used this at work. It's very polished. I wish Linux had something this clean and simple to use. Honestly, I would prefer less UI, though. I just want something that works without fuss for the common use case.

I use this to create gifs and mp4 for game development - Absolutely killer feature set and decent encoding options.