Geppetto: Puppet IDE

http://puppetlabs.com/blog/geppetto-a-puppet-ide/ (old but good example screenshots)
https://github.com/cloudsmith/geppetto
http://cloudsmith.github.com/geppetto/


"As usual, the team ignored Management and did whatever they damn well pleased, working on Geppetto in secret through 15 long months of nights, weekends and vacations"
http://blog.cloudsmith.com/?p=803