The short answer
Tor sends your traffic through three relays run by volunteers, wrapping it in layers of encryption (onion routing) so no single relay knows both who you are and where you are going. On your computer, Tor runs as a local SOCKS5 proxy that apps can use.
Tor vs commercial proxies
Tor is free and strongly anonymous but slow, and its exit IPs are public, so many sites block or challenge them. Commercial proxies are fast, choose their country on demand, and look like normal users, but your provider knows who you are.

Also known as
The onion router, Tor network, onion routing.
Learn more
- Proxy chains
- SOCKS5 proxies
- Proxy vs VPN
- Does a proxy hide my IP?
- The history of Tor and onion routing
- Tor Project support
- EFF on online privacy
- RFC 1928, SOCKS5
Editorial note: Proxy providers change their pools, features and prices often, so treat any figures here as typical ranges at the time of writing and confirm current terms with the provider before you buy.