Tracery : A story-grammar generation library for javascript. Write grammar objects, get generative stories.
jsPDF : A library to generate PDFs in client-side JavaScript.
Vanilla List : The Vanilla Javascript Repository. A searchable repository of dependency-free JavaScript libraries. Over 100 projects and growing.
loglevel : Minimal lightweight logging for JavaScript, adding reliable log level methods to wrap any available console.log methods
Protovis : Protovis composes custom views of data with simple marks such as bars and dots. Unlike low-level graphics libraries that quickly become tedious for vi...
The Closure Compiler, Library, Templates, and Stylesheets help developers create powerful and efficient JavaScript.