Tor, formerly The Onion Router, is a distributed system for anonymizing internet traffic developed by The Tor Project. The Orfox browser, based on Firefox, sends your web traffic through Tor using another app, Orbot: Proxy with Tor. It can hide what you’re browsing from your ISP, and withhold your IP address from the websites you visit. They’ll still know who you are if you log in with Facebook Connect, though…. Orbot doesn’t just work with Orfox: It can be set to launch at the same time as other apps, so they can use it as a VPN connection too. Orfox asks for access to your device/app history and to your photos/media/files, and runs on Android 4.0.3 and up. Orbot requires access to your photos/media/files and to device ID and call information, and runs on Android 4.1 and up. Both apps are free.