Andrei's blog

MetaLearn: Licenses

Licenses range from: Do anything you want but don’t sue me; to: You can’t do anything with this.

By default, anything you make is licensed to a certain extent by the platform you publish it on. Nobody (should be) allowed to use your work unless you state otherwise.

There are many licenses, but I will go only over those related to Open Source and FOSS.

Website with overview of Licenses. Github provides a similar "simplified overview" in it's license selector.

Wikipedia about license compatibility (ability to license projects that use licensed code, under a different license).

Most famous licenses are (from less to more restrictive):

There are also a series of strange licenses, most created as a joke: Bad Licenses. My favorite is the passive-aggressive-license, it allows you to do anything, except run the code.