Tor is free software and an open network that helps you defend against traffic analysis, a form of network surveillance that threatens personal freedom and privacy, confidential business activities and relationships, and state security.
Tor will accept connections from other applications on your computer on TCP port 9050. If you would just like to browse the web with Tor, see Tor Browser instead. This client is configured with defaults that will work for most use cases. For advanced use, install tor from your distribution's package manager.