Thunkable - Powerful but easy to use, drag-and-drop mobile app builder.
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
AppsGeyser - Appsgeyser is the easiest to use DIY native mobile app creation platform.
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
BuildFire - BuildFire is the easiest way for small businesses to build a mobile app in a matter of minutes for iOS and Android.
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.