Circus is a program that runs and watches processes and sockets. Circus can be used as a library or through the command line.
Links:
- Full Documentation : https://circus.readthedocs.io
 - How to Contribute : https://circus.readthedocs.io/en/latest/contributing/
 - Mailing List : https://groups.yahoo.com/neo/groups/circus-dev/info
 - Repository & Issue Tracker : https://github.com/circus-tent/circus
 - IRC : Freenode, channel #mozilla-circus