GPL
GPL (GNU General Public License) is a widely used free software license that guarantees end users the freedom to run, study, share, and modify the software. It is a copyleft license, meaning that derivative works must also be distributed under the same license terms, ensuring that the software remains free and open. The GPL is maintained by the Free Software Foundation and is a cornerstone of the open-source software movement.
Developers should learn about the GPL when working on or contributing to open-source projects to ensure compliance with licensing terms and understand their rights and obligations. It is particularly important for projects that aim to promote software freedom and prevent proprietary forks, such as the Linux kernel and many GNU tools. Understanding the GPL helps in making informed decisions about software distribution and collaboration in the open-source ecosystem.