Douglas Bates, Dirk Eddelbuettel, Romain Francois, and Yixuan Qiu;
 the authors of Eigen for the included version of Eigen

James Joseph Balamuta [aut, cre, cph]
    (<https://orcid.org/0000-0003-2826-8458>),
  Dirk Eddelbuettel [aut, cph] (<https://orcid.org/0000-0001-6419-907X>)

Dirk Eddelbuettel [aut, cre] (<https://orcid.org/0000-0001-6419-907X>),
  James Yang [aut] (<https://orcid.org/0000-0002-0015-7812>)

Roberto A. Cardenas-Ovando, Julieta Noguez and Claudia Rangel-Escareno

James Melville [aut, cre, cph],
  Aaron Lun [ctb],
  Samuel Granjeaud [ctb],
  Dmitriy Selivanov [ctb],
  Yuxing Liao [ctb]

Justin Silverman [aut, cre],
  Cong Ma [ctb, cph],
  Markus Buehren [ctb, cph]

Shusei Eshima [aut, cre] (<https://orcid.org/0000-0003-3613-4046>),
  Naoki Yoshinaga [ctb]

Junhewk Kim [aut, cre],
  Taku Kudo [aut]

Zachary DeBruine [aut, cre] (<https://orcid.org/0000-0003-2234-4827>)

Travers Ching and Dirk Eddelbuettel; the authors and contributors of MsgPack

Yixuan Qiu [aut, cre],
  Ralf Stubner [ctb] (Integration on infinite intervals),
  Sreekumar Balan [aut] (Numerical integration library),
  Matt Beall [aut] (Numerical integration library),
  Mark Sauder [aut] (Numerical integration library),
  Naoaki Okazaki [aut] (The libLBFGS library),
  Thomas Hahn [aut] (The Cuba library)

JJ Allaire [aut],
  Romain Francois [aut, cph],
  Kevin Ushey [aut, cre],
  Gregory Vandenbrouck [aut],
  Marcus Geelnard [aut, cph] (TinyThread library,
    https://tinythreadpp.bitsnbites.eu/),
  Hamada S. Badr [ctb] (<https://orcid.org/0000-0002-9808-2344>),
  Posit, PBC [cph],
  Intel [aut, cph] (Intel TBB library,
    https://www.threadingbuildingblocks.org/),
  Microsoft [cph]

Dirk Eddelbuettel, Brendan Knapp, Daniel Lemire

Dirk Eddelbuettel, Adam M. Johansen, Leah F. South and Ilya Zarubin

Thomas Nagler [aut, cre] (<https://orcid.org/0000-0003-1855-0046>)

Artem Klevtsov [aut, cre] (<https://orcid.org/0000-0003-0492-6647>)

Marc A. Suchard [aut, cre],
  Andrew J. Holbrook [aut],
  Observational Health Data Sciences and Informatics [cph],
  Johan Mabille [cph, ctb] (author and copyright holder of Xsimd library
    under a BSD-3 license),
  Sylvain Corlay [cph, ctb] (author and copyright holder of Xsimd library
    under a BSD-3 license),
  Alexander J. Lee [cph, ctb] (author and copyright holder of
    FeatureDetector library under a CC0 1.0 license)