An open source rating system called Business Readiness Ratings (BRR) has been proposed to enable to the open source community to rate software in an open and standardized way. The initiative is being sponsored by many industry players, including Intel, O'Reilly, SpikeSource and the Carnegie Mellon West Center for Open Source Investigation.
From the website:
BRR will give companies a trusted, unbiased source for determining whether the open source software they are considering is mature enough to adopt. There are over 100,000 open source projects listed on SourceForge, CodeHaus, Tigris, Java.net and Open Symphony. Some widely adopted projects have become high-quality software suitable for mission critical production environments. Many others are less mature and pose potential risks. Today, companies evaluate open source suitability based on homegrown assessment methods without access to useful assessment data or methods.
The ultimate goal of BRR is to give companies a trusted, unbiased source for determining whether the open source software they are considering is mature enough to adopt. It will help adopters assess which open source software is best suited to their needs and enable them to share findings with the community. It promotes use and adoption of open source software and may assist developers in creating and delivering software geared to enterprise use.