Statistical Computing

I am member of the core development teams of
R:
an open source implementation of the S language. The R core team is a group of individuals located in Austria, Canada, Denmark, England, Italy, New Zealand, Switzerland, and the U.S.A., who collectively develop the R base distribution. To support further development of R and open source statistical software in general we have created the R Foundation, where I currently serve as secretary general. Kurt Hornik and I maintain the Comprehensive R Archive Network (CRAN), where you find R itself, more than 1200 extension packages (contributed by users worldwide), additional docmentation and other tools that are useful in combination with R.
BioConductor:
an open source software framework that will assist biologists and statisticians working in bioinformatics, with primary emphasis on inference using DNA microarrays.
Omega:
a platform for exchange and development of new ideas for computing with data.