Componentjs
ComponentJS -- Powerful run-time Component System for structuring HTML5-based Rich Clients
Ractive
Next-generation DOM manipulation
Crossroads.js
JavaScript Routes
Flagsmith Frontend
Web App and Mobile App for Flagsmith
Hasher
Browser history manager for rich media websites
Cycle Core
A fully reactive JavaScript framework for Human-Computer Interaction
Batman
Fighting Crime and Kicking Apps
Remote Storage
Client-side Javascript library to make apps compatible with a remote storage.
Redux Side Effects
Redux toolset for keeping all the side effects inside your reducers while maintaining their purity.
Redux Elm
The Elm Architecture in JavaScript http://salsita.github.io/redux-elm/
Flakes
Flakes is an Admin Template Framework. A combination of CSS Libraries, JavaScript Libraries and Design files that help you build business tools very quickly.
Carrot
🥕 Multi-threaded Self-Assembling Neural Networks in Node.js & Browser
Simplecart
A simple javascript shopping cart that easily integrates with your current website.
Frontless
Build universal JS applications with Riot.JS
Wee
Blueprint for modern web development
Pagerjs
The Single Page Application Framework for KnockoutJS
Sails
Realtime MVC Framework for Node.js