Macistrano is a Mac OS X client for Webistrano, a web-based user interface for managing Capistrano deployments. You can manage project deployments (and their stages like test, production, staging, etc.) with customized settings. From Mathias, the project’s author:
I wanted to be able to run deployments from the comfort of my desktop, and be notified with Growl when they were done. So, the idea for Macistrano was born.