I've been using Kap for a while. Really awesome what the open source community is doing around it. I love it, pretty simple and easy to use.
You can export as MP4, Gif and WebM. Gifs in 15 or 30 frames. Free!
Worth a shot.
Camtasia gives you so much options to edit personalize the recorded video and also you can record voice and webcam alongside the mail screen recording task. You can read the post on top 8 screen recorder for mac here http://www.hawkdive.com/2017/08/...