bit64, curl, R.utils, knitr, xts, nanotime, zoo

Fast aggregation of large data (e.g. 100GB in RAM), fast ordered joins, fast add/modify/delete of columns by group using no copies at all, list columns, friendly and fast character-separated-value read/write. Offers a natural and flexible syntax, for faster development.

Matt Dowle [aut, cre],
  Arun Srinivasan [aut],
  Jan Gorecki [ctb],
  Michael Chirico [ctb],
  Pasha Stetsenko [ctb],
  Tom Short [ctb],
  Steve Lianoglou [ctb],
  Eduard Antonyan [ctb],
  Markus Bonsch [ctb],
  Hugh Parsonage [ctb],
  Scott Ritchie [ctb]

Access the RStudio API (if available) and provide informative error
    messages when it's not.

c(
    person("Kevin", "Ushey", role = c("aut", "cre"), email = "kevin@rstudio.com"),
    person("JJ", "Allaire", role = c("aut"), email = "jj@rstudio.com"),
    person("Hadley", "Wickham", role = c("aut"), email = "hadley@rstudio.com"),
    person("Gary", "Ritchie", role = c("aut"), email = "gary@rstudio.com"),
    person(family = "RStudio", role = "cph")
    )

Kevin Ushey [aut, cre],
  JJ Allaire [aut],
  Hadley Wickham [aut],
  Gary Ritchie [aut],
  RStudio [cph]

c(person("Terry", "Therneau", role = "aut",
	            email = "therneau@mayo.edu"),
             person("Beth", "Atkinson", role = c("aut", "cre"),
	            email = "atkinson@mayo.edu"),
             person("Brian", "Ripley", role = "trl",
                    email = "ripley@stats.ox.ac.uk",
		    comment = "producer of the initial R port, maintainer 1999-2017"))

Recursive partitioning for classification, 
  regression and survival trees.  An implementation of most of the 
  functionality of the 1984 book by Breiman, Friedman, Olshen and Stone.

Recursive Partitioning and Regression Trees

R (>= 2.15.0), graphics, stats, grDevices

Terry Therneau [aut],
  Beth Atkinson [aut, cre],
  Brian Ripley [trl] (producer of the initial R port, maintainer
    1999-2017)

Sparse and Dense Matrix Classes and Methods

c(person("Douglas","Bates", role="aut")
 , person("Martin","Maechler", email="mmaechler+Matrix@gmail.com",
           role = c("aut","cre"))
 , person("Timothy A.", "Davis", role="ctb",
           comment = c("SuiteSparse and 'cs' C libraries, notably CHOLMOD, AMD;
		       collaborators listed in
			dir(pattern = '^[A-Z]+[.]txt$', full.names=TRUE,
			    system.file('doc', 'SuiteSparse', package='Matrix'))"))
 , person("Jens", "Oehlschl?gel", role="ctb", comment="initial nearPD()")
 , person("Jason", "Riedy", role="ctb",
          comment = c("condest() and onenormest() for octave",
 	  	      "Copyright: Regents of the University of California"))
 , person("R Core Team", role = "ctb", comment="base R matrix implementation")
 )