Onion Links

Onion Links is a surface web directory that aggregates and categorizes .onion addresses for Tor hidden services, functioning as an index of dark web resources accessible through the standard web browser without Tor. It is one of several dark web link directories that aim to make Tor service addresses discoverable.

For OSINT investigators, Onion Links serves as a reference tool for identifying and categorizing known Tor hidden services relevant to an investigation. When a specific onion address appears in a criminal communication or seized device, cross-referencing it against directories like Onion Links can quickly identify whether the service is a known entity — a marketplace, forum, or communication platform — or an unlisted, private service.

Investigators use dark web link directories during the reconnaissance phase of investigations to map the ecosystem of services in a particular niche (drug markets, fraud forums, credential trading, hacking services) and to identify the current active addresses for services that periodically change their onion URLs due to law enforcement pressure or technical issues.

Onion Links and similar directories also help investigators understand the dark web landscape relevant to a specific criminal market. Knowing which markets are active, which have been taken down, and which are new entrants provides context for identifying suspect behavior patterns.

For evidentiary purposes, never rely solely on a directory listing to confirm the existence or nature of a hidden service. Verify independently using Tor Browser in a properly isolated environment with appropriate legal authority. Record the directory URL, the entry as displayed, and the timestamp of your query in case notes.