base
Scripts used to build R 3.3 - 3.6 on Windows (retired)gcc-4.9.3
Building R for Windows with the new gcc 4.9.3 toolchainrtools35
Scripts for building the rtools installer bundlegdal2
Modern GDAL/PROJ/GEOS stack with lots of extra driversopenssl
Used by git2r, opensslgdal3
GDAL 3 stack for sf and rgdalgcc-8
Experimental new toolchaingsl
quantlib
Used by RQuantLibhdf5
Used by hdf5rffmpeg
Used by 'av'udunits
Used by udunits2libxml2
Used by xml2 and xsltgpgme
GPG Made Easy (it's still pretty difficult)libsasl
Used by mongolitelibmariadbclient
Used by RMySQL and RMariaDBarrow
libarrow c++ binaries for R (both legacy and new toolchain)netcdf
gdal
Classical GDAL/PROJ build for rgdal. Also checkout https://github.com/rwinlib/gdal2gmp
gmphunspell
Was used by old versions of hunspelllibssh2
Used by git2rlibpq
PostgreSQL client, used by rpqprotobuf
Used by RProtoBuf and protolitekealib
Driver for gdal. Also contains a full copy of hdf5libtiff
tesseract
Tesseract OCR systemextsoft
Some old builds by BDR for r-baseopencv
proj
Used by rgeos, proj4zint
libv8
Used by V8opencv-old
xapian-core
Used by xapraspell
Used on CRAN winbuilderlibgit2
Used by gerthdf4
HDF4 driver for GDALlibz
cbc
Used by rcbclibsbml
Clp
Clp library used in pcaL1imagemagick6
Used by the 'magick' packageutils
msys2 build utilities included with rtoolsgeos
Could be used by rgeoscairo
cairo stack; used by r-base and gdtoolsLove Open Source and this site? Check out how you can help us