I still use Tumult's Hype 3 (Pro, I think) to do HTML5 animations - it's pretty great, even if moving to 4/Pro for the (very few) features I'd like to have seems a bit steep at $99.

Whisk appeals to me because I _know_ it's going to be a polished, lightweight app, but with VS Code having quite usable previews I don't see the value of its current price point (to me).