OpenOPC for Python is an easy to use OPC (OLE for Process Control) library for use with the Python programming language. The project includes a Windows gateway service allowing non-Windows clients to also access OPC-DA calls.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.