When the copyright has run out and the creator doesn’t own their own work.2. Freeware
Copyrighted work/programs you give away or use for free.3. Shareware
Copyrighted work that you can copy, share, and use for free, but only for a limited time; Free trial4. All rights reserved
Allows the purchaser to use software according to the details in the license agreement5. Open source
Open source is software that includes the source code with the idea that someone can improve it.