The MSR FastRDFStore Package is designed for creating an in-memory index of RDF triples, implemented as a WCF service in C#, and consists of server & client side code. RDF triples are the standard format for storing structured knowledge graphs. Instead of relying on a complete SPARQL server engine to index and serve the data from RDF triples, our software package provides the essential functions for traversing the knowledge graph in a much more efficient way.In addition to the binary executables and the source code, the package includes the last dump of Freebase (freebase-rdf-2015-08-09-00-01.gz), as well as the processed version ready to load directly into FastRDFStore. The data release needs to be downloaded separately from Microsoft Download Center (MSR FastRDFStore Package - Data Release). Users who would like to use the package for Freebase do not need to compile the package and process the raw data, but instead can run the executables directly. The executables can be directly run on Windows, or on Linux using Mono.