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GNU General Public License Versions

[OSI Approved License]

This license has two versions that are actively used in many open source communities:

If you have licensed software you've written under the GPL version 2.0, you may wish to relicense your software using GPL version 3.0.

Version 1.0 of the GNU General Public License is generally seen as deprecated. While the Perl community still uses GPL version 1.0 or later, the GPL version 1.0 should not be used for new projects outside of this community.