David Bolin [cre, aut] (<https://orcid.org/0000-0003-2361-5465>),
  Finn Lindgren [aut] (<https://orcid.org/0000-0002-5833-2011>),
  Suen Man Ho [ctb]

Paul J. Northrop [aut, cre, cph],
  Constantinos Christodoulides [aut, cph]

Raquel Barata [aut, cre],
  Raquel Prado [ths],
  Bruno Sanso [ths]

Yousri SLAOUI [aut] (<https://orcid.org/0000-0001-5295-3311>),
  Abir EL HAJ [aut, ctb] (<https://orcid.org/0000-0003-3210-9097>),
  Alandra ZAKKOUR [aut],
  Caroline BORDES [aut, ctb],
  Cyril PERRET [aut] (<https://orcid.org/0000-0002-4552-9093>),
  Jean DUMONCEL [aut, cre] (<https://orcid.org/0000-0003-0789-7458>)

Rudolf Jagdhuber [aut, cre],
  Jorge Nocedal [cph] (lbfgs c library),
  Naoaki Okazaki [cph] (lbfgs c library)

Oliver Keyes [aut, cre], Penelope Hopkins [ctb], Robyn Temple-Wood [ctb], Mayank Lahiri [cph]

Dewey Dunnington [aut, cre] (<https://orcid.org/0000-0002-9415-4582>),
  Phil Harvey [aut]

Amjad Ali [aut, cre, cph],
  Muhammad Hamraz [aut],
  Saeed Aldahmani [aut],
  Zardad Khan [aut]

Alcinei Mistico Azevedo [aut, cre]
    (<https://orcid.org/0000-0001-5196-0851>)

Joachim Gassen [aut, cre] (<https://orcid.org/0000-0003-4364-2911>)

Bishal Gurung [aut, cre],
  Saikat Das [aut],
  Achal Lama [aut],
  Kn Singh [aut]

Felipe Campelo [aut, cre],
  Moises Botelho [aut]

Eric Batista Ferreira, Portya Piscitelli Cavalcanti, Denismar Alves Nogueira

Fabian Otto-Sobotka [cre],
  Elmar Spiegel [aut],
  Sabine Schnabel [aut],
  Linda Schulze Waltrup [aut],
  Paul Eilers [ctb],
  Thomas Kneib [ths],
  Goeran Kauermann [ctb]

Lluís Revilla Sancho [aut, cre]
    (<https://orcid.org/0000-0001-9747-2570>),
  Juanjo Lozano [ths] (<https://orcid.org/0000-0001-7613-3908>),
  Azucena Salas Martinez [ths] (<https://orcid.org/0000-0003-4572-2907>)

Joe Chelladurai [aut, cre] (<https://orcid.org/0000-0001-8477-3753>)

Kosuke Imai [aut, cre],
  Zhichao Jiang [aut]

Kerem Tuncer [cre],
  Donald Green Green [aut]

Jed Stephens [aut, cre] (<https://orcid.org/0000-0002-0131-703X>)

Vincent Goulet [cre, aut],
  Gerard Jungman [aut] (Original GSL code),
  Brian Gough [aut] (Original GSL code),
  Jeffrey A. Ryan [aut] (Package API),
  Robert Gentleman [aut] (Parts of the R to C interface),
  Ross Ihaka [aut] (Parts of the R to C interface),
  R Core Team [aut] (Parts of the R to C interface),
  R Foundation [aut] (Parts of the R to C interface)