Cellx
Ultra-fast implementation of reactivity for javascript
Javascript State Machine
A finite state machine javascript micro framework
Functional Js
A functional js library that facilitates currying and point-free / tacit programming
Koa
Expressive middleware for node.js using ES2017 async functions
Theory
Abstraction layer for cross platform JavaScript.
Aura
A scalable, event-driven JavaScript architecture for developing widget-based applications. Works with Backbone.js and other frameworks.
Backbone Deep Model
Improved support for models with nested attributes.
Invisible
Invisible.js: Reusable models for the client and the server
Fishbone.js
A super lightweight (½kb) JavaScript library with automatic method chaining, automatic context binding, event support and simple inheritance. c-{{{-<
Rambda
Faster alternative to Ramda in just 10kB
Remote Storage
Client-side Javascript library to make apps compatible with a remote storage.
Prime
an OOP javascript library for node.js and the browsers
Boiler
Boiler is a utility library that makes every day tasks in JavaScript easier by providing over 115 methods that work on arrays, collections, functions, numbers, objects, and strings.
Venus.js
where bugs go to die
Use.js
An AMD/RequireJS plugin for consuming incompatible JavaScript files.
Stampit
Create objects from reusable, composable behaviors.
Spine
Lightweight MVC library for building JavaScript applications