Tracery : A story-grammar generation library for javascript. Write grammar objects, get generative stories.
Frappe Charts : GitHub-inspired simple and modern charts for the web with zero dependencies.
Sammy.js : Sammy is a tiny javascript framework built on top of jQuery, It's RESTful Evented Javascript.
JavaScript Templates : For web application developers, the '''JavaScript Templates''' engine from TrimPath is a lightweight APL / GPL open-source component that lets you hav...
Ember.js : A JavaScript framework for creating ambitious web applications
nlp_compromise does NLP in the browser. It's a handy, and not overly-fancy tool for understanding, changing, and playing with english. We've also got a modest, though ambitious plugin ecosystem.