ProntoForms - ProntoForms is a mobile business solutions application, converting paper forms onto any tablet or mobile device.
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
ProcessMaker - ProcessMaker is an easy to use BPM and workflow software solution. It is used to design, automate, and deploy business processes of any kind.
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
Forms On Fire - Forms On Fire provides a complete, customizable mobile forms and workflow system that is reliable and secure, works offline or online.
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.