Robinhood - Free stock trading service.

Richie Invest - An app that lets you invest with your friends

Sumday - Investing how you least expect it

Raiz - Invest spare change automatically from everyday purchases into a diversified portfolio.

Matador - Free investing + Social feed of trades + 2.5% on your cash

Bamboo - Bamboo is a continuous integration and deployment tool that ties automated builds, tests and releases together in a single workflow.