Mustr - Mustr is a public relations platform that helps the media team in organizing the network of journalists and bloggers and maintaining relations with them.
SnakeLogic - The puzzle based snake game
Crowdly - Crowdly is a social advocate management platform, helps brands find, rank and engage their top advocates on Facebook.
Gumroad Small Product Lab - Bite-sized lessons to help you launch your product.
Jamballa - Jamballa is a platform that enables brands to reach bloggers and influencers more easily to promote their products and services, and to reach the targeted audience.
Productbox - Talk with fellow product managers about how you do stuff.