Cloudify
Cloudify is a pure play, open source cloud orchestration and automation software. It's used for a variety of needs, from autonomous application management, to uses like NFV orchestration. It was built from the bottom up as a cloud orchestration framework, and is built to be pluggable to any infrastructure. Its also the most extensive implementation of TOSCA, which makes it completely technology agnostic.
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MCollective
Marionette Collective (MCollective) is an orchestration framework built on top of Puppet. It can interact with a large number of servers (using a pub-sub middleware) and can execute jobs in parallel
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