The new website isn’t the first open source effort from NASA, in fact the increasingly popular OpenStack cloud software stack grew out of a NASA project. If you go further back into history, the Beowulf cluster — forerunner of most of today’s Linux clusters — was also a NASA project.
Unfortunately for outside developers NASA’s past open source efforts have not been very well organized, nor has there been an easy way to contribute code to the various projects. The new code website is designed to change that. According to its homepage the site’s mission is to “surface existing projects, provide a forum for discussing projects and processes, and guide internal and external groups in open development, release, and contribution.”