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Official community forum for Tor users, relay operators, developers and onion-service administrators.

Official guides for understanding, deploying and maintaining Tor onion services.

Active public discussion archive for Tor relay and bridge operators, support questions and network issues.

Tor Project documentation portal for onion-service applications, standards and operator tools.

Load-balancing system for resilient Tor onion services, documented by the Tor onion-services team.

Tor add-on that helps onion-service operators reduce guard-discovery and related attacks.

Independent dashboard analyzing Tor relay operators, concentration and network diversity.

Historical public mailing-list messages documenting Tor development, research and relay operations.

Search engine for finding indexed Tor onion services, with abuse filtering and public documentation.

Research study examining the structure and technical characteristics of dark-web content and services.

Research paper describing large-scale crawling and analysis methods for onion services.

Historical visualization and research record mapping a sample of linked Tor onion services.

Longitudinal study measuring unique Tor onion services while accounting for mirrors and topology bias.

Open-source utility for gathering public metadata about onion services during authorized research.

Tor measurement project collecting performance data for public relays, bridges and onion services.

Official service-status page for Tor Project websites, bridges, directories and network services.

Question-and-answer archive covering Tor configuration, relays, onion services and research.

Aftenposten AS instructions for submitting documents securely through its verified SecureDrop service.

Aftonbladet instructions for submitting documents securely through its verified SecureDrop service.

Bloomberg Industry Group instructions for submitting documents securely through its verified SecureDrop service.

Bloomberg News instructions for submitting documents securely through its verified SecureDrop service.

Official Tor service distributing bridge relay addresses to users facing network blocking.

CBC instructions for submitting documents securely through its verified SecureDrop service.

Dagbladet instructions for submitting documents securely through its verified SecureDrop service.