Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
Codenvy - Cloud workspaces for development teams.
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
Ansible - Radically simple configuration-management, application deployment, task-execution, and multi-node orchestration engine
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.
Mercurial SCM - Mercurial is a free, distributed source control management tool.