A Portal Component for Vuejs, for rendering DOM outside of a component, anywhere in the document.
Jailed - execute untrusted code with custom permissions
198 byte publish/subscribe messaging micro-framework
History.js gracefully supports the HTML5 History/State APIs (pushState, replaceState, onPopState) in all browsers. Including continued support for data, titles, replaceState. Supports jQuery, MooTools and Prototype. For HTML5 browsers this means that you can modify the URL directly, without needing to use hashes anymore. For HTML4 browsers it will revert back to using the old onhashchange functionality.
React Native for Web
Supermodel - Minimal Model Tracking for Backbonejs
A simple, lightweight library making it easy to create routes or run events based on a specific URL hashtag.
AMD and CJS dependency management in the browser
Timer Object/Class. Kickass!
Like underscore.js, but lazier
A history service for AngularJS. Undo/redo, that sort of thing. Has nothing to do with the "back" button, unless you want it to.