Measurement study mapping the I2P anonymity network and analyzing its observable structure.
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Independent dashboard analyzing Tor relay operators, concentration and network diversity.
Protocol and API documentation for Tor relay and bridge status data used by network tools.
Official Tor archive providing recent and historical network descriptors for reproducible research.
Network test that checks whether Tor access appears blocked and contributes measurement data.
Tor network-health dashboard showing directory consensus, votes, signatures and relay measurements.
Official source repository for the Tor network daemon and core protocol implementation.
Public community forum discussing I2P software, services, development and network operations.
Official page that tests whether the current connection appears to be using the Tor network.
Official service-status page for Tor Project websites, bridges, directories and network services.
Active public discussion archive for Tor relay and bridge operators, support questions and network issues.
Tor measurement project collecting performance data for public relays, bridges and onion services.
Tor Project hub for technical reports, open research questions, datasets and research safety guidance.
Official Tor service distributing bridge relay addresses to users facing network blocking.
Historical lookup showing whether an IP address appeared as a Tor relay on a specified date.
Historical visualization and research record mapping a sample of linked Tor onion services.
Public-health research measuring harmful-content availability and searches on the Tor network.
Official interface for exploring public Tor relay and bridge metadata from Onionoo.
Checker for seeing whether a phone number or profile appears in Facebook-related breach data.
Research paper on integrating data from web databases that are not directly indexed by search engines.
Cybernews checker for seeing whether an email or phone appears in known data leaks.
Research paper on finding and organizing scholarly databases within the academic invisible web.
Research paper presenting a crawler architecture for collecting dark-web data over Tor.
Research articles on dark-web monitoring, exposed data, cybercrime groups and external threats.