BitBucket - Bitbucket is a free code hosting site for Mercurial and Git. Manage your development with a hosted wiki, issue tracker and source code.
Ansible - Radically simple configuration-management, application deployment, task-execution, and multi-node orchestration engine
GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
GitHub - Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.
Puppet Enterprise - Get started with Puppet Enterprise, or upgrade or expand.