Microjs : Fantastic Micro-Frameworks and Micro-Libraries for Fun and Profit!
Photon : UI toolkit for building desktop apps with Electron.
Ember.js : A JavaScript framework for creating ambitious web applications
loglevel : Minimal lightweight logging for JavaScript, adding reliable log level methods to wrap any available console.log methods
Yjs : Yjs is a CRDT implementation that exposes its internal data structure as shared types. Shared types are common data types like Map or Array with super...
Rainbow is a code syntax highlighting library written in Javascript.
It was designed to be lightweight (1.4kb), easy to use, and extendable.
It is completely themable via CSS.