BOOM is a collection of C++ classes for Bayesian computation. The name stands for Bayesian object oriented modeling. The fact that it is also the sound that your computer makes when it crashes is a bonus.
BOOM exists as raw C++ and as an R package. The raw C++ does not depend on R (though it uses some code from R, some of it modified to make it more graceful in C++). The R package is intended to supply the C++ libraries in a way that several subsequent R packages can be written against BOOM without importing the full BOOM source into each one.
You can now download BOOM through CRAN.
Steven L. Scott >