Tor is a web browser along with several other tools that allows you to access websites and communicate across the Internet anonymously. The browser can be used on nearly any computer and with any connection. Tor is capable of making any signals sent using the TCP protocol anonymous. This is done by using a sequence of anonymous servers. The signals moving between your computer and the destination are bounced between the servers obfuscating the source. Tor includes proxy server lists as well that can be used to access information locked to certain geographic areas. Tor is very effective although it cannot guarantee complete anonymity. It can also potentially slow down transfer speeds.
The alternative to Chrome, spiced up for social