Cfengine Used in over 5000 companies. Mark’s conservative estimate is over 1,000,000 computers running Cfengine today. There are over two thousand sites with tens of servers; and thirteen sites with tens of thousands of servers.
Chef The OpsCode Wiki lists 7 organizations using Chef, including VMWare, Etsy and RightScale.
Puppet Puppet has over 80 organizations using it. Top users are:
Google: 45K Macs + internal servers.
Zynga: 80k servers.
JPMorganChase: 35k servers.
Does It Allow Re-use of Configuration Policies?
Bcfg2 Recipes are in the source code control repo in version 2 but sharing is not easy, group names need to be standardized first.