This document provides a directory of open source intelligence (OSINT) links organized by topic. It begins with definitions of OSINT, distinguishing it from open source data, information, and validated intelligence. The document then provides over 100 categories of OSINT links covering topics like country studies, terrorism, military, economics, and more. Each category lists several relevant websites and resources for open source research. The author encourages the sharing of additional links and feedback to improve the directory.