mzR is an R interface to common mass spectrometry data formats and relies on third-party C/C++ code, in particular proteowizard. It currently supports random out-of-memory access to various raw data formats (mzData, netCDF, mzXML and mzML) and identification data (mzIdenML).

The package is available from the Bioconductor project as stable and devel versions. Please refer to the respective pages for installation instruction and the package vignette for more details.