Simian is a Google built, open source, enterprise-class Mac OS X software deployment utility with App Engine-based hosting and a client based on the Munki open-source project.
Simian was released as open-source on January 29, 2011 at the Macworld conference in San Francisco, CA. The original open-source release was also announced on the Google Open Source Blog.
References
Simian (software) Wikipedia(Text) CC BY-SA