vue.js : Vue.js is a library for building interactive web interfaces. It provides data-reactive components with a simple and flexible API. Core features includ...
dancer.js : dancer.js is a high-level audio API, usable with both Mozilla's Audio Data API and Webkit's Web Audio API with flash fallback, designed to make sweet ...
Bespoke.js : Bespoke.js is a super minimal, modular presentation library for modern browsers, designed to foster a rich plugin ecosystem.
React : A JavaScript library for building user interfaces
Leaflet : A Modern, Lightweight Open-Source JavaScript Library for Interactive Maps
For web application developers, the '''JavaScript Templates''' engine from TrimPath is a lightweight APL / GPL open-source component that lets you have template-based programming (like PHP/ASP/JSP) while running in a web browser