pickSaaS - Hundreds of SaaS products, analyzed.
Google Open Source - All of Googles open source projects under a single umbrella
Look at that SaaS - Inspiration and resources for SaaS founders
LaunchKit - Open Source - A popular suite of developer tools, now 100% open source.
Inside SaaS Sales - 1000+ sales emails and voicemails from top SaaS companies
Code NASA - 253 NASA open source software projects