Kallithea is a project of the Software Freedom Conservancy, Inc. and is released under the terms of the GNU General Public License, v 3.0 (GPLv3).

Kallithea is copyrighted by various authors, including but not necessarily limited to the following:

• Copyright © 2012–2024, Mads Kiilerich
• Copyright © 2024, Aristotelis Stageiritis
• Copyright © 2024, Poesty Li
• Copyright © 2024, Valentin Kleibel
• Copyright © 2019–2020, 2022–2023, Manuel Jacob
• Copyright © 2023, Mathias De Mare
• Copyright © 2023, qy117121
• Copyright © 2015–2017, 2019–2022, Étienne Gilli
• Copyright © 2016–2017, 2020, 2022, Asterios Dimitriou
• Copyright © 2022, Jaime Marquínez Ferrándiz
• Copyright © 2022, Louis Bertrand
• Copyright © 2022, toras9000
• Copyright © 2022, yzqzss
• Copyright © 2022, МАН69К
• Copyright © 2014–2021, Thomas De Schampheleire
• Copyright © 2018–2021, ssantos
• Copyright © 2019–2021, Private
• Copyright © 2020–2021, fresh
• Copyright © 2020–2021, robertus
• Copyright © 2021, Eugenia Russell
• Copyright © 2021, Michalis
• Copyright © 2021, vs
• Copyright © 2021, Александр
• Copyright © 2017–2020, Allan Nordhøy
• Copyright © 2017, 2020, Anton Schur
• Copyright © 2020, Artem
• Copyright © 2020, David Ignjić
• Copyright © 2020, Dennis Fink
• Copyright © 2020, J. Lavoie
• Copyright © 2020, Ross Thomas
• Copyright © 2020, Tim Ooms
• Copyright © 2012, 2014–2017, 2019, Andrej Shadura
• Copyright © 2019, Adi Kriegisch
• Copyright © 2019, Danni Randeris
• Copyright © 2019, Edmund Wong
• Copyright © 2019, Elizabeth Sherrock
• Copyright © 2019, Hüseyin Tunç
• Copyright © 2019, leela
• Copyright © 2019, Mateusz Mendel
• Copyright © 2019, Nathan
• Copyright © 2019, Oleksandr Shtalinberg
• Copyright © 2019, THANOS SIOURDAKIS
• Copyright © 2019, Wolfgang Scherer
• Copyright © 2019, Христо Станев
• Copyright © 2012, 2014–2018, Dominik Ruf
• Copyright © 2014–2015, 2018, Michal Čihař
• Copyright © 2015, 2018, Branko Majic
• Copyright © 2018, Chris Rule
• Copyright © 2018, Jesús Sánchez
• Copyright © 2018, Patrick Vane
• Copyright © 2018, Pheng Heong Tan
• Copyright © 2018, Максим Якимчук
• Copyright © 2018, Марс Ямбар
• Copyright © 2012–2017, Unity Technologies
• Copyright © 2015–2017, Søren Løvborg
• Copyright © 2015, 2017, Sam Jaques
• Copyright © 2017, Alessandro Molina
• Copyright © 2017, Ching-Chen Mao
• Copyright © 2017, Eivind Tagseth
• Copyright © 2017, FUJIWARA Katsunori
• Copyright © 2017, Holger Schramm
• Copyright © 2017, Karl Goetz
• Copyright © 2017, Lars Kruse
• Copyright © 2017, Marko Semet
• Copyright © 2017, Viktar Vauchkevich
• Copyright © 2012–2016, Takumi IINO
• Copyright © 2015–2016, Jan Heylen
• Copyright © 2015–2016, Robert Martinez
• Copyright © 2015–2016, Robert Rauch
• Copyright © 2016, Angel Ezquerra
• Copyright © 2016, Anton Shestakov
• Copyright © 2016, Brandon Jones
• Copyright © 2016, Kateryna Musina
• Copyright © 2016, Konstantin Veretennicov
• Copyright © 2016, Oscar Curero
• Copyright © 2016, Robert James Dennington
• Copyright © 2016, timeless@gmail.com
• Copyright © 2016, YFdyh000
• Copyright © 2012–2013, 2015, Aras Pranckevičius
• Copyright © 2014–2015, Bradley M. Kuhn
• Copyright © 2014–2015, Christian Oyarzun
• Copyright © 2014–2015, Joseph Rivera
• Copyright © 2014–2015, Sean Farley
• Copyright © 2015, Anatoly Bubenkov
• Copyright © 2015, Andrew Bartlett
• Copyright © 2015, Balázs Úr
• Copyright © 2015, Ben Finney
• Copyright © 2015, Daniel Hobley
• Copyright © 2015, David Avigni
• Copyright © 2015, Denis Blanchette
• Copyright © 2015, duanhongyi
• Copyright © 2015, EriCSN Chang
• Copyright © 2015, Grzegorz Krason
• Copyright © 2015, Jiří Suchan
• Copyright © 2015, Kazunari Kobayashi
• Copyright © 2015, Kevin Bullock
• Copyright © 2015, kobanari
• Copyright © 2015, Marc Abramowitz
• Copyright © 2015, Marc Villetard
• Copyright © 2015, Matthias Zilk
• Copyright © 2015, Michael Pohl
• Copyright © 2015, Michael V. DePalatis
• Copyright © 2015, Morten Skaaning
• Copyright © 2015, Nick High
• Copyright © 2015, Niemand Jedermann
• Copyright © 2015, Peter Vitt
• Copyright © 2015, Ronny Pfannschmidt
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• Copyright © 2015, Viktar Palstsiuk
• Copyright © 2014, Ante Ilic
• Copyright © 2014, Calinou
• Copyright © 2014, Daniel Anderson
• Copyright © 2014, Henrik Stuart
• Copyright © 2014, Ingo von Borstel
• Copyright © 2014, invision70
• Copyright © 2014, Jelmer Vernooij
• Copyright © 2014, Jim Hague
• Copyright © 2014, Matt Fellows
• Copyright © 2014, Max Roman
• Copyright © 2014, Na'Tosha Bard
• Copyright © 2014, Rasmus Selsmark
• Copyright © 2014, SkryabinD
• Copyright © 2014, Tim Freund
• Copyright © 2014, Travis Burtrum
• Copyright © 2014, whosaysni
• Copyright © 2014, Zoltan Gyarmati
• Copyright © 2010–2013, Marcin Kuźmiński
• Copyright © 2010–2013, RhodeCode GmbH
• Copyright © 2011, 2013, Aparkar
• Copyright © 2012–2013, Nemcio
• Copyright © 2012–2013, xpol
• Copyright © 2013, Andrey Mivrenik
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• Copyright © 2013, Dennis Brakhane
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• Copyright © 2013, Grzegorz Rożniecki
• Copyright © 2013, Ilya Beda
• Copyright © 2013, ivlevdenis
• Copyright © 2013, Jonathan Sternberg
• Copyright © 2013, Leonardo Carneiro
• Copyright © 2013, Magnus Ericmats
• Copyright © 2013, Martin Vium
• Copyright © 2013, Mikhail Zholobov
• Copyright © 2013, mokeev1995
• Copyright © 2013, Ruslan Bekenev
• Copyright © 2013, shirou - しろう
• Copyright © 2013, Simon Lopez
• Copyright © 2013, softforwinxp
• Copyright © 2013, stephanj
• Copyright © 2013, zhmylove
• Copyright © 2013, こいんとす
• Copyright © 2011–2012, Augusto Herrmann
• Copyright © 2012, Dan Sheridan
• Copyright © 2012, H Waldo G
• Copyright © 2012, hppj
• Copyright © 2012, Indra Talip
• Copyright © 2012, mikespook
• Copyright © 2012, nansenat16
• Copyright © 2012, Philip Jameson
• Copyright © 2012, Raoul Thill
• Copyright © 2012, Tony Bussieres
• Copyright © 2012, Vincent Duvert
• Copyright © 2012, Vladislav Poluhin
• Copyright © 2012, Zachary Auclair
• Copyright © 2011, Ankit Solanki
• Copyright © 2011, Dmitri Kuznetsov
• Copyright © 2011, Jared Bunting
• Copyright © 2011, Jason Harris
• Copyright © 2011, Les Peabody
• Copyright © 2011, Liad Shani
• Copyright © 2011, Lorenzo M. Catucci
• Copyright © 2011, Matt Zuba
• Copyright © 2011, Nicolas VINOT
• Copyright © 2011, Shawn K. O'Shea
• Copyright © 2010, Łukasz Balcerzak

The above are the copyright holders who have submitted direct contributions to the Kallithea repository.

In the Kallithea source code, there is a list of third-party libraries and code that Kallithea incorporates.

The front-end contains a list of software that is used to build the front-end but isn't distributed as a part of Kallithea.