GoCD

Go is a continuous delivery and release management tool, built from the ground up with pipelines in mind, and makes it easy to model complex build and deploy workflows

     

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Hudson

The original lightweight CI tool written in Java. Initially part of Sun, then acquired by Oracle, and now maintained to the Eclipse Foundation

     

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Jenkins

Jenkins is an open source, lightweight CI tool written in Java, with high extensibility and a fast release cycle. It was forked from Hudson after Oracle acquired it, and has since added significantly more features than the original

     

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Spinnaker

Spinnaker is an open source, multi-cloud continuous delivery platform for releasing software changes with high velocity and confidence. It provides two core sets of features: cluster management and deployment management.

     

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Apache ZooKeeper

ZooKeeper is a centralized service for maintaining configuration information, naming, providing distributed synchronization, and providing group services. It is distributed and highly reliable, with Consensus, group management and presence protocols built-in.

     

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