Convenient to use and very helpful for technical illustrations. For ex, I created the gifs here [1] using LICEcap - showing a class boundary in 3D space. Have been using it at work for a couple of years now.

[1] https://blog.statsbot.co/support-vector-machines-tutorial-c1... sorry, couldn't find a gif to directly link to. If you don't want to scroll, ctrl+F for the text "This is what the projected data looks like". There are two consecutive gifs, then a static image, and then another gif after that.