Sites that use the .onion top-level domain are privacy-focused websites that are only accessible using the Tor network.

It really becomes critical when the browser is closed by mistake while closing one or two tabs of the window. This problem used to be experienced by several users in day-to-day life. It causes closing ...

When you use the Tor Browser, the only network traffic that's being masked is via the web browser. If you want more traffic anonymized and encrypted, you need to take a different approach.