Halfmoon is a front-end framework with a built-in dark mode and full customizability using CSS variables; great for building dashboards and tools.

Glide.js is a dependency-free JavaScript ES6 slider and carousel developed by Jędrzej Chałubek. It’s lightweight, flexible and fast. Designed to slide. No less, no more

Sal (Scroll Animation Library) is written with aim to provide performant and lightweight solution for animating elements on scroll. It's based on the Intersection Observer, which gives amazing performance in terms of checking the element's presence in viewport.