Tangle is a JavaScript library for creating reactive documents. Your readers can interactively explore possibilities, play with parameters, and see the document update immediately. It is a lightweight library that provides a simple API for tangling up the values in your document. Tangle.js has no dependencies, and works with any JavaScript framework, or none at all.

TangleKit is an optional collection of UI components that let your readers adjust values and visualize the results. You can grab whichever components you want, use them, extend them, modify them, or just learn from them and make your own. TangleKit also includes (and depends on) a few helpful libraries, such as MooTools, sprintf, and BVTouchable.

Published under: Framework | MIT License

jwerty is a JS lib which allows you to bind, fire and assert key combination strings against elements and events. It normalises the poor std api into something easy to use and clear. All jwerty events will require a jwertyCode in some way. jwertyCodes can be passed as strings, or arrays, strings being the easiest way to express a combo.

jwerty is a small library, weighing in at around 1.5kb bytes minified and gzipped (~3kb minified). jwerty has no dependencies, but is compatible with jQuery, Zepto or Ender if you include those packages alongside it.

Published under: Framework | MIT License

Would you like to create a game similar to Angry Birds in Javascript? box2dweb can probably help you with that. box2dweb is a port of Box2DFlash 2.1a to JavaScript. The Box2D physics engine was developed by Erin Catto.

There already exists a port to JavaScript called Box2dJs, but it’s not up-to-date and you have to import a big amount of JavaScript files in every project, whereas this version is stored in a single file.

Published under: Framework | License Free

LevelDB is a fast key-value storage engine written at Google that provides an ordered mapping from string keys to string values. Google has recently announced that they are open sourcing LevelDB under a BSD-style license.

LevelDB is a C++ library that can be used in many contexts. For example, LevelDB may be used by a web browser to store a cache of recently accessed web pages, or by an operating system to store the list of installed packages and package dependencies, or by an application to store user preference settings.

Published under: Framework | BSD License

melonJS is the result of our enthusiasm and past experiments with Javascript, and came from the feeling that no simple, free and standalone library was available to develop games. And although still a big work in progress and not yet bug free, melonJS already allows to easily create some nice games.

melonJS integrates the popular Tiled map format, allowing to easily design levels using the Tiled map editor, and to focus on the game features itself. melonJS is compatible with the various existing browsers. However, as of today, Google Chrome 12 (or upper) is highly recommended.

Published under: Framework | License Free

Opa is a new generation of web development platform. It is a new programming language, a new web server, a new database and a new distributed execution engine, all of them tightly integrated to provide a great experience for web developers.

Opa is concise, simple and readable, it is also extremely powerful, concurrent, dynamically distributed, and extremely secure, much more so than just about any other programming language. Opa is designed to make web development fun, secure and right.

Published under: Framework | GPL License

TameJS from the creators of OkCupid, is an extension to JavaScript, written in JavaScript, that makes event programming easier to write, read, and edit. Tame is very easy to use in Node and other V8 projects. And it can be dropped into projects where desired – no need to rewrite any existing code.

They have written hundreds of thousands of lines of purely async code at OkCupid, and their code has stayed manageable, even after 8 years of development. Note Tame is not an attempt to dumb down async programming. It’s just a cleaner way to write it. Further, your programs will likely have lower latency; with Tame it’s a lot easier to keep parallel calls parallel.

Published under: Framework | MIT License

Initializr is an HTML5 templates generator to help you getting started with an HTML5 project. It is built on HTML5 Boilerplate, a powerful HTML5 template created by Paul Irish and Divya Manian.

Initializr will generate for you a clean customizable template based on Boilerplate with just what you need to start. Some functionalities have been removed from Boilerplate to focus on what most people really use.

Published under: Framework | License Free

Active Admin is a Ruby on Rails plugin for generating administration style interfaces. It abstracts common business application patterns to make it simple for developers to implement beautiful and elegant interfaces with very little effort.

Active Admin’s interface was designed from the ground up for non-technical users. It makes it easy for developers to build highly usable interfaces that customers will actually enjoy using. You can get started with one line of code or customize the entire interface with the provided DSL.

Admin Style Interfaces for Ruby on Rails

Published under: Framework | License Free

NowJS is a NodeJS module. The client javascript (now.js) is served by the NowJS server. NowJS creates a magic namespace “now”, accessible by server and client. Functions and variables added to now are automatically synced, in real-time.

You can call easily client functions from the server and server functions from the client. That means you can push to the client simply by calling a client-side Javascript function on the server. Communication is achieved using Socket.io

NowJS v0.2 is supported in Chrome, Opera, Safari, Firefox, and IE9. Support for older version of IE is coming.

Published under: Framework | License Free