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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Cabot
Cabot is an open source, self hosted infrastructure monitoring tool. It can monitor your services and send telephone, SMS, email or chat alerts to your team whenever anything goes down, all without writing a single line of code.
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ConfigCat
ConfigCat is a feature flags as a service. It gives you a web based dashboard to manage your feature flags + SDKs to integrate those feature flags into your applications. ConfigCat enables you to use the same feature flags in your mobile apps, websites and server-side applications. It offers all features for free. You get an enterprise-ready SLA with the pricing plans.
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Hubot
Hubot is a chat bot that can be configured to do a variety of tasks. Apart from usual CI stuff like deploying, it can be interestingly configured to do different workflows like posting images, translating languages and integrating with Google Maps, and being a bot, it can be configured to ask questions like what is the current deployed version, etc.
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Rex
A agent-less server orchestration tool built on Perl
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SaltStack
Salt is a powerful and different approach to infrastructure management, by focusing on high speed communications between large number of systems, and can perform orchestration, remote code execution and much more.
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Vaurien
A Chaos Monkey for TCP, it randomly disconnects or stalls TCP connections in your application to test application tolerance and high availability. Makes sure you correctly handle these unexpected events
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