12-R_Core_Developers.Rmd

# R Core Developers {#CoreDev}

This page lists the former and current members of the R Core team who have write access to the R source.

  * Brian Ripley (present) 
  * Deepayan Sarkar (present) 
  * Douglas Bates (present) 
  * Duncan Murdoch (up to September 2017)
  * Duncan Temple Lang (present) 
  * Friedrich Leisch (present)
  * Guido Masarotto (up to June 2003)
  * Heiner Schwarte (up to October 1999)
  * John Chambers (present)
  * Kurt Hornik (present)
  * Luke Tierney (present)
  * Martin Maechler (present)
  * Sebastian Meyer (present)
  * Martin Morgan (up to June 2021)
  * Martyn Plummer (present)
  * Michael Lawrence (present)
  * Paul Murrell (present)
  * Peter Dalgaard (present)
  * Robert Gentleman (present)
  * Ross Ihaka (present)
  * Seth Falcon (up to August 2015)
  * Simon Urbanek (present)
  * Stefano lacus (up to July 2014)
  * Thomas Lumley (present)
  * Tomas Kalibera (present)
  * Uwe Ligges (present)

View the [affiliations of R Core members](). We've left it up to the individual core developers to list areas of expertise (or things they are willing to maintain) if they wish.
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The [Contributors page on the R Project website](https://www.r-project.org/contributors.html) also lists contributors, outside the R Core team, who provided invaluable help by donating code, bug fixes, and documentation.