Travis CI is a service for continuous integration. It provides no-cost public repositories to open source projects. It supports linux builds/tests and includes support for databases like postgreSQL and mySQL: http://docs.travis-ci.com/user/database-setup/
Jenkins is a popular open source CI server and there is a service running Jenkins in the cloud:
https://www.cloudbees.com It does not provide no-cost public repositories for free to open source projects.
Neither service supports testing with Oracle, SQL Server and PostgreSQL databases or builds on Windows OS on their cloud servers. Those are additional requirements for many OHDSI applications so I have deployed our own OHDSI Jenkins CI Windows server on AWS with Oracle, SQL Server and PostgreSQL databases for OHDSI CI build/test.
I am also planning to deploy a Jenkins CI ‘slave’ linux server in AWS to support OHDSI build/test on linux so we can cover that too.
In the OHDSI wiki, I will document how to access the OHDSI Jenkins CI server and how to setup CI build/test jobs. A first draft of the documentation should be available early next week. The goal is to have a fully automated build/test/deployment process with github hooks, integration with an OHDSI nexus maven artifacts repository and automatic deployment of OHDSI services/web UIs to OHDSI AWS servers.