InfoQ is reporting the release of 2 open source projects by Orbitz, a big online travel company.

The first project is for the java platform: ERMA (Extremely Reusable Monitoring API), is "an instrumentation API that has been designed to be applicable for all monitoring needs" with the goal to "make instrumentation as simple as logging".

The second, built with Python, is Graphite, "a highly scalable real-time graphing system". this project seems similar to MRTG and RRDTool.