A "Profiler" is a tool or software used to analyze and gather information about a system, application, or user behavior. It helps identify performance bottlenecks, resource usage, and other metrics that can improve efficiency. Profilers are commonly used in software development to optimize code and enhance user experience. In the context of criminal psychology, a profiler may refer to a specialist who analyzes behavioral patterns to help law enforcement understand and catch criminals. They study various factors, such as motives and psychological traits, to create a profile of potential suspects, aiding investigations and improving public safety.