Tom's OSINT Workbench is a free, open-source intelligence investigation tool for Windows. It enables structured, offline case management for tracking people, companies, domains, social profiles, emails, phones, addresses, usernames, and IP addresses as connected entities.Key features include entity-centric case management with typed relationships and confidence levels, visual link analysis with force-directed or hierarchical graphs, and paste & extract functionality that pulls structured data from URLs using public APIs like RDAP, DNS, Shodan, and crt.sh.The app supports snapshots & diffing to track changes over time, advanced search across all entities and notes, and self-contained HTML reports with embedded graphs and timelines. It also includes a built-in OSINT directory of 94 curated tools and resources.No accounts, no cloud, no subscriptions. All data lives in a portable SQLite file on your machine.Designed for analysts, journalists, and security researchers, the tool is entirely offline and private by design, with no telemetry or analytics.