Debian is a free operating system (OS) for your computer. An operating system is the set of basic programs and utilities that make your computer run.
Debian is a free, Unix-like operating system for many different kinds of computers, including arm and mips based systems, powerpc and s390 (IBM z-series), and, of course, your standard Intel based desktop or laptop PC (i386/amd64).
Debian is developed by thousands of volunteers around the world. Visit www.debian.org for more information.
For Debian-packages for Tor, see the Tor website.