Tor Browser

Tor Browser routes traffic through the Tor network, passing it across multiple relays so that no single point knows both who you are and what you are accessing.

It is an anonymity tool, not a search engine and not simply a private browsing mode: it hides your address from the sites you visit and hides what you visit from your network provider.

The cost is speed — multi-relay routing is substantially slower — and some sites block Tor traffic outright. It also protects the browser only, not other applications on the machine.