While ShareX does everything I need in terms of screen capture versus Snagit, I can't currently name a video editor tool that's a replacement for Camtasia. As the program is currently running for about $250, this is a very nice option. Still, I wouldn't use anything from their "assets" site without a full license .
Platform: Mac and PC.
Site: https://www.techsmith.com/evangelists/mvp ... based on the reddit post about it, this doesn't appear to be a recent development: https://www.reddit.com/r/vmware/comment ... copies_of/
Note that if you really start digging into the editor function, I strongly recommend checking out the recommended how-to video series the program pops up with. The program isn't intuitive but once you understand their system, it's very easy.