Copyright
collection of rights granted to author for a piece of work
Public Domain
Isn’t protected by copyright law, the copyright has expired, the work was created using public money, or donated work into the public domain
Examples: Classic Literature
Freeware
Copyrighted work that you can use, copy, or give away for free
Examples: iTunes, Windows Media Player Safari, and Explorer
Shareware
Copyrighted work that you can copy, share, or use for free but for a limited time
Examples: LITE apps, free trials, a thousand free internet hours.
All Rights Reserved
Only the purchaser can use the software
Examples: Most software you buy at Best Buy or similar stores would be considered All Rights Reserved
Open Source
Software that includes the source code with the idea that someone can improve it
Examples: Firefox and Chrome allow users to have the actual code for the software. A user can then use it to make an add-on or extension.