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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Capistrano
The Ruby equivalent of Fabric, Capistrano is a Ruby framework to configure and run deployment or system administration tasks on local or remote machines. It extends the Rake DSL to define tasks, and can group tasks by Roles.
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FastForward
Flexible operating-system event and metric forwarding agent. Receives input and forwards output using plugins.
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Fog
The Ruby Cloud API library. Provides a Ruby API for interacting and managing many cloud providers, such as spinning up new instances, terminating old ones, attaching storage, etc. Currently supports more than 20 providers, including EC2, Rackspace, Brightbox, etc.
linux windows osx open-source cloud-paas ruby
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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Mina
A Ruby Rake-like DSL for fast deployment and automation, similar to Capistrano but faster and lesser overhead, since it creates only a single SSH connection for a deploy
linux osx open-source orchestration ruby
Orc
A model driven orchestration tool for deployment of application clusters
linux windows osx open-source provisioning orchestration ruby
testssl.sh
A command-line tool which checks a server's service on any port for the support of TLS/SSL ciphers, protocols as well as some cryptographic flaws. It's designed to provide clear output for your "is this good or bad" decision.
linux osx open-source security shell