TRIBE Group - TRIBE is a self-serve marketplace connecting social media influencers with leading brands to create social media campaigns.
Productbox - Talk with fellow product managers about how you do stuff.
Movable Media - Movable Media recruits influencers to create original content for brands, and gets them to move their audiences to the content they create.
SnakeLogic - The puzzle based snake game
Beauty Clout - Beauty Clout is an influencer marketplace for beauty and fashion.
Gumroad Small Product Lab - Bite-sized lessons to help you launch your product.