Third party software available for CRAN Windows services

CRAN offers to build, link and check packages with some selected third party software under Windows. The CRAN build machines for Windows (as well as the on-demand service available at are equipped with the software that is shipped with Rtools, see In addition, third party software products installed are reflected by the environment and make variables listed below.

Environment and make variables

Please also read the ReadMe files in the repository corresponding to your version of R for more information about availability of binary package for R for Windows.

Ancient sources for third party software products used for building packages with R versions prior to R-4.2.0 are available from or

last change: April 17, 2023