SamsaraJS is an animation library for your layouts. It gives you a language for positioning, orienting, and sizing DOM elements and coordinating the animation of these properties.
The one thing missing from reading an online catalog or magazine is the feel of the pages in your hands. The sound of the pages flipping. The overall ...
React Compose lets you encapsulate component logic into smaller, reusable functions, which can then be combined back into components.
Botlytics lets you monitor analytics for your bots, to track the conversations they have and the messages they send. It's a well-documented REST API.
Driveway is a pure CSS masonry layout aid. It was developed using stylus, and is exploring pure CSS masonry layouts.
Turntable.js is a responsive jQuery slider. It lets you flip through a series of images as your mouse/finger moves across a container.
Megatype makes it easy to create typographic structure.