Boxstarter
Repeatable, reboot resilient windows environment installations made easy using Chocolatey packages. When its time to repave either bare metal or virtualized instances, locally or on a remote machine, Boxstarter can automate both trivial and highly complex installations. Compatible with all Windows versions from Windows 7/2008 R2 forward.
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Brooklyn
A Java based deployment tool, focused on both deployment as well as post-deploy lifecycle management. It is aware of network topologies, integrates with many cloud and PaaS APIs, and is designed to handle the entire roll-out
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Chocolatey
Chocolatey is like apt-get for Windows. It can install packages and dependencies over the command line.
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Eucalyptus
An open source software for building Amazon EC2-compatible private and hybrid cloud platforms
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jclouds
A Java Library for controlling cloud resources, with various plugins for many popular cloud providers.
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Rex
A agent-less server orchestration tool built on Perl
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Rundeck
Turns your operational procedures into self-service portal. Define common operational tasks in the Rundeck web portal, and safely hand it over to the rest of the team so that they can perform these tasks without you being around.
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SSH KeyBox
An open-source jump box solution with auditing capabilities
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