"The open.NASA site--which aims to provide a collaborative forum
for highlighting the ways the agency is leveraging transparency,
participation, and collaboration as part of the Open Government
Directive--is hosted on an open-source Linux, Apache, MySQL, and
PHP, or LAMP, stack.
"It also uses an open-source content management system,
WordPress 3.2.1, to generate and post content, according to
information on the site."