Berkshelf
A cookbook source structure manager for Chef, similar to Bundler for Ruby. Each Chef cookbook can be structured as an individual entity and can be pulled into your main Chef workflows.
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Consul
Consul makes it simple for services to register themselves and to discover other services via a DNS or HTTP interface. Register external services such as SaaS providers as well
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FastForward
Flexible operating-system event and metric forwarding agent. Receives input and forwards output using plugins.
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Instrumental
Instrumental is a real-time, high-scale application and server monitoring tool with intelligent alerts, a powerful query language, and free development accounts.
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Librarian-Puppet
Librarian-Puppet is a source structure and dependency manager for Puppet modules, similar to bundler for Ruby. Each Puppet module can be managed as a separate source repository with individual versioning, and can then be pulled into your Puppetfile.
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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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