Microsoft R Open, formerly known as Revolution R Open (RRO), is the enhanced distribution of R from Microsoft Corporation. It is a complete open source platform for statistical analysis and data science.
RRE is the fastest, most cost effective, enterprise-class, big data big analytics software available. With high-performance advanced analytics, Revolution R Enterprise unlocks the insight hidden in Big Data across complex and diverse data infrastructures, including Hadoop, clusters and grids, and Enterprise Data Warehouses.
the Microsoft Data Science User Group