Rails Remote Control allows you to attach to running Rails processes using DRb and change the log level without restarts. Also, view actions handled per process.

Client/server for remote logger using multiple communication methods

Shuttlecraft is an easy-to-use wrapper for much of the functionality in Rinda. Create a Shuttlecraft::Mothership to manage the RingServer and RingProvider, and then many Shuttlecrafts can easily connect to the Mothership. Registration management is easy and automatic. Easily broadcast messages to all registered services (ie. Shuttlecrafts) from either the Mothership or a particular Shuttlecraft.