Google Open Source - All of Googles open source projects under a single umbrella
Open Loyalty for Startups - Open source stack for building customer focused products
LaunchKit - Open Source - A popular suite of developer tools, now 100% open source.
ChatWhale - Gamify your customer communication and loyalty rewards
Open Source @IFTTT - A collection of IFTTT OSS projects.
SendSMS.global - SMS Marketing Platform