I had never head of Rive before and it looks like something I can use in one of my projects. Thanks, this is the kind of stuff that keeps me addicted to HN.
I've used Rive in a small personal project before and I really can't imagine creating or editing web animations in any other way. Apparently they also made their own vector-based feathering technique, which is also amazing:
https://rive.app/blog/introducing-vector-feathering
I do understand the appeal for an open format though. Rive seems to have their own proprietary (documented) binary format: https://rive.app/docs/runtimes/advanced-topic/format
They say on https://rive.app/pricing that the Format is OS and MIT, perhaps I have missed something?
Oh, my mistake. I shouldn't have used the word "proprietary", but too late to edit. There does seem to be community-made runtimes: https://rive.app/docs/runtimes/community-runtimes
Me neither. Was pretty enthused, and even more so when I found that they have a desktop app instead of being yet another Web-only tool.
Then I downloaded the app and found you can't use it without setting up an "account" and being online.
So in the end, this is more tiresome Web-only crap. Deleted.