At the moment, Dulwich is licensed under the GNU General Public License, version 2 or later. We'd like to relicense Dulwich under the Apache v2 (or later) license, as the GPL is problematic for many free software Python projects that are under BSD-style licenses. See also https://github.com/jelmer/dulwich/issues/153 For reference, a full copy of the Apachev2 license can be found here: https://www.apache.org/licenses/LICENSE-2.0 New contributions to Dulwich should be dual licensed under the GNU GPLv2 (or later) and the Apachev2 (or later) licenses. Contributions made prior were contributed under the GPLv2 (or later) license alone. The following contributors have not (yet) relicensed their code under dual Apachev2/GPLv2: Aaron O'Mullan Abderrahim Kitouni Adam "Cezar" Jenkins Alberto Ruiz Alexander Belchenko Alex Holmes Ali Sabil Andi McClure André Roth Andres Lowrie Artem Tikhomirov Augie Fackler Benjamin Pollack Brendan Cully Brian Visel Bruce Duncan Bruno Renié Chaiwat Suttipongsakul Chow Loong Jin Chris Eberle Chris Reid codingtony dak180 Damien Tournoud Dan Callaghan Daniele Sluijters David Bennett David Blewett David Borowitz David Carr David Keijser David Ostrovsky David Pursehouse DeeKey Dirk diryboy D-Key Dmitrij D. Czarkoff Dmitriy Dov Feldstern Fabien Boucher Gary van der Merwé Hal Wine Hannu Valtonen Hans Kolek Hervé Cauwelier Hwee Miin Koh Jameson Nash James Westby Jason R. Coombs John Arbash Meinel John Carr Jonas Haag Jonathan Chu kwatters Lukasz Balcerzak Marc Brinkmann Marcin Kuźmiński Martin Packman Max Bowsher max Max Shawabkeh Michael K Mike Edgar Mike Williams Nick Stenning Nick Ward Nix Pascal Quantin Paul Chen Paul Hummer rfaulk Ricardo Salveti Risto Kankkunen Robert Brown Rod Cloutier Roland Mas Ronald Blaschke Ross Light Ryan Faulkner Ryan McKern Sam Vilain Siddharth Agarwal Stefan Zimmermann Takeshi Kanemoto Tay Ray Chuan Ted Horst Timo Schmid Tommy Yu Travis Cline Víðir Valberg Guðmundsson William Grant Yifan Zhang Yuval Langer