In July 2013, JetBrains has launched a free command line version of ReSharper.
ReSharper Command Line Tools is a set of free standalone tools that execute hundreds of ReSharper code inspections outside of Visual Studio and additionally find code duplicates. The tools can be used without installing ReSharper and integrated with Continuous Integration or code quality management servers.
To learn more, please refer to ReSharper Command Line Tools.
To download ReSharper Command Line Tools, please proceed to ReSharper Downloads.