ChatWhale - Gamify your customer communication and loyalty rewards
Google Open Source - All of Googles open source projects under a single umbrella
Promoter - The Most Effective Way To Engage And Learn From Customers
LaunchKit - Open Source - A popular suite of developer tools, now 100% open source.
Open Source @IFTTT - A collection of IFTTT OSS projects.
SmallDevTools - Handy developer tools with a delightful interface