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
Other notable copyleft licenses include the GNU Lesser General Public License (LGPL), which is more permissive