Lifecycle guide for Tor from Tor Project

All releases, patches, maintenance and support periods at a glance

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📅 Last update on 2025-10-16

What is Tor?

Automate product release and end-of-life management

Tor, short for The Onion Router, is free and open-source software for enabling anonymous communication. It directs Internet traffic through a free, worldwide, volunteer overlay network, consisting of more than seven thousand relays, to conceal a user"s location and usage from anyone performing network surveillance or traffic analysis. Using Tor makes it more difficult to trace a user"s Internet activity. Tor"s intended use is to protect the personal privacy of its users, as well as their freedom and ability to communicate confidentially through IP address anonymity using Tor exit nodes.

The entire lifecycle of Tor

The following figure shows you the visualised product life cycle of Tor. You can see all releases with the latest patch version, the long-term support characteristics (orange flag in the green circle, the periods for version provision, maintenance and support.