NASA's Software Catalog

Obligatory: NOSA is not a free software license.

Details at https://www.gnu.org/licenses/license-list.html#NASA

The site is not loading for me, but last time I looked, their github was better: https://github.com/nasa

Edit: Now that I typed this, the site is loading and it looks like they have added more stuff! Regardless, github link is helpful if you are interested.

Site was having trouble loading for me so I found an archive of it: http://archive.is/mvLFT