http://www.datadirect.com/products/odbc/greenplum
Progress DataDirect offers its industry-standard ODBC driver for Greenplum Database:
DataDirect's Greenplum ODBC driver includes the same advanced feature set of our industry-standard ODBC driver, offering robust functionality, better performance, and higher availability than any other Greenplum connectivity solution.
Progress DataDirect (http://www.datadirect.com/)