Capistrano - Deploy your application to any number of machines simultaneously, in sequence or as a rolling set via SSH (rake based). (Source Code) MITRuby
CloudSlang - Flow-based orchestration tool for managing deployed applications, with Docker capabilities. (Source Code) Apache-2.0Java
CloudStack - Cloud computing software for creating, managing, and deploying infrastructure cloud services. (Source Code) Apache-2.0Java/Python
Cobbler - Cobbler is a Linux installation server that allows for rapid setup of network installation environments. (Source Code) GPL-2.0Python
Fabric - Python library and cli tool for streamlining the use of SSH for application deployment or systems administration tasks. (Source Code) BSD-2-ClausePython
Genesis - A template framework for multi-environment BOSH deployments. MITPerl
munki - Webserver-based repository of packages and package metadata, that allows macOS administrators to manage software installs. (Source Code) Apache-2.0Python
Overcast - Deploy VMs across different cloud providers, and run commands and scripts across any or all of them in parallel via SSH. (Source Code) MITNodejs