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This paper describes a general process for evaluating programs, with specific information on how to evaluate Open Source Software / Free Software (OSS/FS) programs. This process is designed so that you can compare OSS/FS programs side-by-side with proprietary programs and other OSS/FS programs, and determine which one (if any) best meets your needs. This process is based on four steps: Identify candidates, Read existing reviews, Compare the leading programs' basic attributes to your needs, and then Analyze the top candidates in more depth. This set of Identify, Read Reviews, Compare, and Analyze can be abbreviated as "IRCA". Important attributes to consider include functionality, cost, market share, support, maintenance, reliability, performance, scaleability, useability, security, flexibility/customizability, interoperability, and legal/license issues.