Tor for Windows Tor 是一个由虚拟通道组成的网络，团体和个人用它来保护自己在互联网上的隐私和安全。同时它使得软件开发人员能够创建具有内建隐私保护特性的新的通信工具。 Tor 为一系列应用提供了基础，通过这些应用，组织和个人可以在公开的网络上分享信息而不必担心隐私受到威胁。
Tor is a toolset for organizations and people that want to improve their safety and security on the Internet. Using Tor can help you anonymize Web browsing and publishing, instant messaging, IRC, SSH, and other applications that use the TCP protocol. Tor also provides a platform on which software developers can build new applications with built-in anonymity, safety, and privacy features.

Communications are bounced around a distributed network of servers, called onion routers. Instead of taking a direct route from source to destination, data packets on the Tor network take a random pathway through several servers that cover your tracks so no observer at any single point can tell where the data came from or where it's going. This makes it hard for recipients, observers, and even the onion routers themselves to figure out who and where you are. Tor's technology aims to provide Internet users with protection against "traffic analysis," a form of network surveillance that threatens personal anonymity and privacy, confidential business activities and relationships, and state security.