copyleftlisensseihin

Copyleft licenses are a type of free software license that requires any derivative works to be distributed under the same license. This ensures that the freedoms granted by the original license are preserved in all future versions of the work. The term "copyleft" is a play on the word "copyright," with the "left" indicating that the rights are retained by the community rather than being restricted to the original author.

The most well-known copyleft license is the GNU General Public License (GPL), created by the Free Software Foundation. The GPL is designed to guarantee that anyone who receives a copy of a GPL-licensed program can freely use, modify, and distribute it, while ensuring that any modifications are also distributed under the same GPL license. This approach promotes the sharing and collaboration of software, fostering an ecosystem of open-source development.

Other notable copyleft licenses include the GNU Lesser General Public License (LGPL), which is more permissive and allows for the use of GPL-licensed code in proprietary software, and the Affero General Public License (AGPL), which extends the GPL to cover network use of the software. These licenses, along with the GPL, are part of the broader movement for free and open-source software, which advocates for the freedom to use, study, modify, and distribute software.