EnhanceJS : EnhanceJS is a new Javascript framework designed to improve the application of Progressive Enhancement by first testing browser capabilities for key J...
yepnope.js : A Conditional Loader For Your Polyfills!
Logerr : Experimenting with window.onerror, trying to make JavaScript debugging easy.
What does it do?
Provides JavaScript error details in a readable format. ...
Prototype : Easy Ajax and DOM manipulation for dynamic web applications
Modest Maps is a small, extensible, and free library for designers and developers who want to use interactive maps in their own projects.