OLE DB

List of OLE DB Providers
Directory of authors and vendors of OLE DB provider software and OLE DB provider SDKs.
http://www.sqlsummit.com/oledbVen.htm

OpenAccess OLE DB SDK
Provides the toolkit and the run-time software components needed to implement an OLE DB provider for your data source. By Automation Technology, Inc.
http://www.odbcsdk.com/products/openaccess/oledb_overview.asp

SimbaProvider for OLAP
Software development toolkit for creating OLE DB for OLAP (ODBO) and XML for Analysis (XMLA) connectivity to relational data sources. Win32 platforms. By Simba Technologies.
http://www.simba.com/olap-sdk.htm