HEATKEYS

R Language Tutorial for SAS, SPSS, and Stata Users

A blog on statistics and R

About us: We are three biostatistics professors (Jeff Leek, Roger Peng, and Rafa Irizarry) who are fired up about the new era where data are abundant and statisticians are scientists. Follow us:...

GRASS GIS (Geographic Resources Analysis Support System) is an open source, free software (FOSS) Geographical Information System (GIS) with raster, topological vector, image processing, and visualization functionality

An R introduction to statistics that explains basic R concepts and illustrates with statistics textbook homework exercises.

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SourceForge.net. Fast, secure and free downloads from the largest Open Source applications and software directory

statistics.com is the leading provider of professional development courses in statistics. Online programs give you regular access to leading experts in statistics with courses that fit your budget and schedule.