The best alternatives to particles.js are Anime.js 3.0, Anime.js, and Zdog. If these 3 options don't work for you, we've listed a few more alternatives below.
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Atropos is a lightweight, free and open-source JavaScript library to create stunning touch-friendly 3D parallax hover effects. Available for JavaScript, React and Vue.js
Amtrak.js is a super simple and easy way to interact with the Amtrak's train tracking API in both Node.js and the browser. Everything from fetching data, parsing it, and cleaning it is handled for you, so you can focus on the real work. Also, it's open source!