Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
Robinhood - Free stock trading service.
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
Rally Rd. - Invest in blue-chip classic cars like stocks
Codeship - Codeship is a fast and secure hosted Continuous Delivery platform that scales with your needs.
Freetrade - Invest in stocks & ETFs for free, get started in seconds.