This report by SpikeSource, the Center for Open Source Investigation at Carnegie Mellon West, and Intel Corporation gives potential users of open source software an easy, effective and trustworthy process for evaluating available options. The calculation employed in the Business Readiness Rating model weights the factors that have proven to be most important for successful deployment of open source software in specific settings. Among these are functionality, quality, performance, support, community size, security, and others. Read the report here.