Copyleft

Copyleft is the legal technique of granting certain freedoms over copies of copyrighted works with the requirement that the same rights be preserved in...

licenses rely on a copyright holder's power to license their work, as copyleft which also utilizes copyright for such a purpose. The public domain is...

licenses. The two main categories of open-source licenses are permissive and copyleft. Both grant permission to change and distribute software. Typically, they...

were of the "permissive" kind. In the mid-1980s, the GNU project produced copyleft free-software licenses for each of its software packages. An early such...

BSD-like or BSD-style license, is a free-software license which instead of copyleft protections, carries only minimal restrictions on how the software can...

financial penalties. Copyleft is a type of license that mandates derivative works to be licensed under the license's terms. Copyleft licenses are free and...

generally find the same set of software to be acceptable, but sometimes see copyleft as restrictive. They generally advocate permissive free software licenses...

Linux was originally designed as a clone of Unix and is released under the copyleft GPL license. Thousands of Linux distributions exist, many based directly...

reversed is a phrase that indicates a release of a publication under a copyleft license. It is a pun on the common copyright disclaimer "All rights reserved"...

puts few restrictions on reuse and has high license compatibility. Unlike copyleft software licenses, the MIT License allows reuse within proprietary software...