Gumroad Checklist - Create a converting Gumroad product page
Animo.js - Animo.js is a lightweight, open-source tool that enables developers to manipulate animations and transitions.
Substance - A JavaScript library for web-based content editing
Anime.js - Lightweight JavaScript animation library
WrappingGum - Create a sales page for your gumroad products
Move.js - Move.js is a mini Javascript library that provides CSS3 animations.