Stager takes the pain out of running many development server instances. It acts as a proxy and manager for a number of instances that run behind it, starting and cleaning them up as needed. The instances are selected simply, by using a domain name prefix to choose between them.

This can be used in a number of potential situations:

• Staging instances for developers running tests
• Testing links from ticket / issue trackers
• Continuous integration servers / buildbots needing access to a URL running a specific version of code. (think API testers)

Stager offers the following features:

• Flexibility in what gets staged (branches, commits, etc.)
• The ability to run more than one instance simultaneously
• Automatic cleanup of instances that are no longer used