[karl42]

Debian splits their distribution into three components:

  * main (free software)
  * non-fee
  * contrib (free software that depends on software outside of main, so usually non-free software)

While I am not fond of the "contrib" terminology, I think this categorization makes a lot of sense.

[okl]

Additionally, there is now `non-free-firmware`, e.g., http://ftp.debian.org/debian/dists/testing/non-free-firmware...