Terry Therneau [aut] (S original),
  Thomas Lumley [trl] (R port),
  Kjetil Halvorsen [trl] (R port),
  Kurt Hornik [trl, aut, cre] (<https://orcid.org/0000-0003-4198-9911>, R
    port),
  R Core Team [ctb]

Nathan Constantine-Cooke [aut, cre]
    (<https://orcid.org/0000-0002-4437-8713>),
  Jonathan Kitt [ctb, trl],
  Antonio J. Pérez-Luque [ctb, trl]
    (<https://orcid.org/0000-0002-1747-0469>),
  Daniel Possenriede [ctb, trl] (<https://orcid.org/0000-0002-6738-9845>),
  Michal Lauer [ctb, trl],
  Kaique dos S. Alves [rev] (<https://orcid.org/0000-0001-9187-0252>),
  Al-Ahmadgaid B. Asaad [rev] (<https://orcid.org/0000-0003-3784-8593>),
  Anatoly Tsyplenkov [ctb, trl] (<https://orcid.org/0000-0003-4144-8402>)

Brian O'Meara [aut],
  Jonathan Eastman [aut],
  Tracy Heath [aut],
  April Wright [aut],
  Klaus Schliep [aut],
  Scott Chamberlain [aut],
  Peter Midford [aut],
  Luke Harmon [aut],
  Joseph Brown [aut],
  Matt Pennell [aut],
  Mike Alfaro [aut],
  Luna L. Sanchez Reyes [aut, cre],
  Emily Jane McTavish [ctb]

Trevor L Davis [aut, cre] (<https://orcid.org/0000-0001-6341-4639>)

Stéphane Laurent [aut, cre],
  Wojciech Maj [cph] (author of the 'React-DateTimeRange-Picker' library)

Enrico Schumann [aut, cre] (<https://orcid.org/0000-0001-7601-6576>),
  Unicode, Inc. [dtc, cph] (source of timezone names in 'tznames')

Seth Leonard [aut, cre],
  Jiancong Liu [ctb]

Riva Quiroga [aut, cre] (<https://orcid.org/0000-0002-1147-4135>),
  Edgar Ruiz [aut],
  Mauricio Vargas [aut],
  Mauro Lepore [aut] (<https://orcid.org/0000-0002-1986-7988>),
  Rayna Harris [ctb],
  Daniela Vasquez [ctb],
  Joshua Kunst [ctb]

Lisa Steinmann [aut, cre, cph]
    (<https://orcid.org/0000-0002-2215-1243>),
  Barbora Weissova [ctb] (<https://orcid.org/0000-0002-3297-6855>)

David Conde, Miguel A. Fernandez, Bonifacio Salvador

Koen Hufkens [aut, cre] (<https://orcid.org/0000-0002-5070-8109>),
  BlueGreen Labs [cph, fnd]

Abdollah Safari [aut, cre],
  Shahrzad Salmasi [aut],
  Peter Loewen [aut]

Vincent Dorie [aut, cre] (<https://orcid.org/0000-0002-9576-3064>),
  Hugh Chipman [aut],
  Robert McCulloch [aut],
  Armon Dadgar [ctb] (adaptive radix tree),
  R Core Team [ctb] (basis of RNG),
  Guido U Draheim [ctb] (ax_check_compile_flag.m4),
  Maarten Bosmans [ctb] (ax_check_compile_flag.m4),
  Christophe Tournayre [ctb] (ax_compiler_ext.m4, ax_ext.m4),
  Michael Petch [ctb] (ax_compiler_ext.m4, ax_ext.m4,
    ax_gcc_x86_avx_xgetbv.m4, ax_gcc_x86_cpuid.m4),
  Rafael de Lucena Valle [ctb] (ax_compiler_ext.m4, ax_ext.m4),
  Steven G. Johnson [ctb] (ax_compiler_vendor.m4, ax_gcc_x86_cpuid.m4,
    ax_pthread.m4, <https://orcid.org/0000-0001-7327-4967>),
  Matteo Frigo [ctb] (ax_compiler_vendor.m4, ax_gcc_x86_cpuid.m4),
  John Zaitseff [ctb] (ax_compiler_vendor.m4),
  Todd Veldhuizen [ctb] (ax_cxx_namespace_std.m4),
  Luc Maisonobe [ctb] (ax_cxx_namespace_std.m4),
  Scott Pakin [ctb] (ax_func_posix_memalign.m4,
    <https://orcid.org/0000-0002-5220-1985>),
  Daniel Richard G. [ctb] (ax_pthread.m4)