Plug: does anybody have anything good to recommend as a free/open source alternative to the featured: https://tumult.com/hype/ https://tumult.com/hype/ and http

Plug: does anybody have anything good to recommend as a free/open source alternative to the featured: https://tumult.com/hype/ https://tumult.com/hype/ and https://www.svgator.com/ https://www.svgator.com/ for producing animated svg/canvas like these: https://tumult.com/hype/gallery/HerokuPlatformScale/HerokuPlatformScale.html https://tumult.com/hype/gallery/HerokuPlatformScale/HerokuPl...?