Decision.io - Decision.io is an interesting platform that provides you the simple features to develop the app or an integrated workflow without using any program language or code.
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
RapidClipse - RapidClipse is a web-based development platform that allows you to build the app with Java and provides you with a hustle-free configuration.
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
ElectroNeek RPA - A free tool to hunt & automate repetitive internal processes
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.