Guava - Google core libraries for Java 6+.
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
Java - A concurrent, class-based, object-oriented, language specifically designed to have as few implementation dependencies as possible
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
Quarkus - Quarkus: Supersonic Subatomic Java. . Contribute to quarkusio/quarkus development by creating an account on GitHub.
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.