The name "Tor" can refer to several different components.
The Tor software is a program you can run on your computer that helps keep you safe on the Internet. Tor protects you by bouncing your communications around a distributed network of relays run by volunteers all around the world: it prevents somebody watching your Internet connection from learning what sites you visit, and it prevents the sites you visit from learning your physical location. This set of volunteer relays is called the Tor network. You can read more about how Tor works on the overview page.
The Tor Project is a non-profit (charity) organization that maintains and develops the Tor software.
Tor for K-Meleon
You can access TOR settings in K-Meleon from the tools>proxy menu, to enable or disable TOR proxy, uncheck the TOR proxy command. For more advanced settings select the sub menu TOR Settings which is also listed under tools>proxy. It is strongly advised that you do not enable the 'Run with Windows' setting if you are using a portable version of K-Meleon.
For more information about the TOR project please visit the TOR project home and the FAQs wiki. For help and support for TOR for K-Meleon please visit the K-Meleon extensions forum.