Opensource Builders - Find open-source alternatives to commercial apps
Google Open Source - All of Googles open source projects under a single umbrella
Stylepill - Get beautiful open source UI components weekly
Code NASA - 253 NASA open source software projects
Hasura - Hasura is an open platform to build scalable app backends, offering a built-in database, search, user-management and more.
Disney Open Source - Explore Disney's Open Source projects