Not protected by any copyright law because it meets one of the following conditions: copyright has expired, the work was created using public money, the creator donated the work into the public domain.
Examples: Classic Literature
Copyrighted work that you can copy, use, or give away for free.
Examples: Internet Explorer, Safari, Windows Media Player, iTunes.
Copyrighted work that you can use, share and download for free but only for a limited time. If you want a permanent version you must purchase it.
Examples: Free trial, free app, AOL
All Rights Reserved
Allows only the purchaser to use software according to the details in the licence agreement.
Examples: Most software you get at best buy
Software that has the source code with the idea that someone can improve it.
Examples: Firefox and chrome let users have the code for the software