Paul Klemm [aut, cre, cph] (<https://orcid.org/0000-0002-5985-1737>),
  Saul Pwanson [aut],
  Matthew Mark Strasiotto [ctb]

Rick M Tankard [cre, aut] (<https://orcid.org/0000-0002-8847-9401>)

Rene Carmona [aut],
  Bruno Torresani [aut],
  Brandon Whitcher [ctb],
  Andrea Wang [ctb],
  Wen-Liang Hwang [ctb],
  Robert Alberts [ctb],
  Jonathan M. Lees [ctb, cre]

Matilda Brown [aut, cre],
  Barnaby Walker [aut]

Alan Butler [aut, cre],
  Cameron Bracken [aut]

Vincent Goulet [cre, aut],
  R Core Team [aut] (Code from the original Sweave drivers)

Vincent Guegan [aut, cre],
  Etienne Kintzler [aut],
  Jules Lecocq [aut]

Kurt Hornik [aut, cre] (<https://orcid.org/0000-0003-4198-9911>),
  Christian Buchta [ctb],
  Torsten Hothorn [ctb],
  Alexandros Karatzoglou [ctb],
  David Meyer [ctb],
  Achim Zeileis [ctb] (<https://orcid.org/0000-0003-0918-3766>)

Kurt Hornik [aut, cre] (<https://orcid.org/0000-0003-4198-9911>),
  University of Waikato [ctb, cph] (Weka Java library)

Mafalda Sá Ferreira [aut, cre],
  Regina Bispo [ctb],
  FCT, I.P. [fnd] (under the scope of the projects UIDB/00297/2020 and
    UIDP/00297/2020 (NovaMath))

Douglas Morrison [aut, cre, cph]
    (<https://orcid.org/0000-0002-7195-830X>),
  Ron Brookmeyer [aut]

Simon Bonner [aut, cre],
  Xinxin Huang [aut]

Uwe Ligges <Uwe.Ligges@R-project.org>
    with contributions (the original R-Sweave mode) from Gilbert Ritschard and Karl Koeller

Robert J. Hijmans [cre, aut],
  Huang Fang [ctb],
  C.A. van Diepen [ctb],
  Allard de Wit [ctb],
  Daniel van Kraalingen [ctb],
  Tamme van der Wal [ctb],
  C. Rappoldt [ctb],
  Hendrik Boogard [ctb],
  I.G.A.M. Noy [ctb],
  Alterra, Wageningen-UR [cph]

Yitao Ma [aut, cre],
  Xinjin Zhang [aut],
  Bin Cui [aut]

Gilberto Queiroz [aut] (<https://orcid.org/0000-0001-7534-0219>),
  Gilberto Camara [aut] (<https://orcid.org/0000-0002-3681-487X>),
  Pedro Andrade [aut] (<https://orcid.org/0000-0001-8675-4046>),
  Felipe Souza [aut, cre],
  Luiz Assis [aut]

Dan Warren [aut, cre],
  Anthony Geneva [aut],
  Rob Lanfear [aut],
  Luke Harmon [ctb],
  April Wright [ctb],
  Diego Mallo [ctb],
  Klaus Schliep [ctb]