Free OPC Software
Our detailed 'Free Stuff' listings are shown on these separate pages:
These pages draw together all the information we have on freely available OPC tools: clients for testing your servers, and servers for trying out your clients.
Our Source Code and Tools and Techniques pages carry more information on some of these tools, while our Links page offers some recommendations from third-party sites.
In addition, several OPC vendors offer free downloads of toolkit products, for evaluation purposes.
Note: some older OPC demos and samples may include outdated proxy/stub DLLs which could affect the integrity of other installed OPC applications. See our earlier article on this problem.