The Echo Nest Remix API lets you manipulate music and video from the web. We've done the following: rearranged the syllables of a vocal line, walkenized and cowbellized hundreds of thousands of songs in a week, mixed up the hits of a drum beat and synced it to another loop, beat matched two songs, split apart DJ mixes by their individual tracks, made new kinds of music, synced a video to a song, transitioned between two covers of the same song, made a cat play piano. We're making this available as an open source SDK for Python that can currently be easily installed for Mac OS X and Linux. It accesses the Echo Nest Analyze API at http://developer.echonest.com seamlessly through a web services interface and parses the results. You'll need an Echo Nest API key to use this SDK.

Appcelerator Titanium is an open source platform for building rich desktop applications using web technologies like HTML, CSS, Javascript as well as Flash and Silverlight. Titanium apps can be built using the Appcelerator SDK - our open web platform, or you can use any third-party Ajax library or framework. We want to make sure you are able to realize the benefits of Titanium without being locked into a particular web framework.

PhoneGap is a development tool that allows web developers to take advantage of the core features in the iPhone, Android, and Blackberry SDK using JavaScript.

Our goal is to create a community-led, cross-platform, open source Software Development Kit that would contain up-to-date documentation, sample code, tutorials and utility libraries for OpenGL 3.0 and beyond. We want to make it easier and simpler to introduce newbie programmers to the world of OpenGL while giving also a centralized location of reference materials for other developers.

Moblin is a Linux-based software platform for building visually rich, dynamic, and connected applications that run on devices based on Intel® Atom™ processor technology. Moblin's common core allows application portability for running on devices such as MIDs and Netbooks.

The Open Handset Alliance, a group of more than 30 technology and mobile companies, is developing Android: the first complete, open, and free mobile platform. To help developers get started developing new applications, we're offering an early look at the Android Software Development Kit.