LGPL OPC-UA server and client library written in C++. Python bindings can be found in the opcua-python repository. The library is under development but works will all tested clients and servers. http://freeopcua.github.io/

Currently supported:

• read, write, browse
• translateBrowsePathToNodeId
• DataChange Events
• Events
• Subscriptions

Work in progress

• StatusChange Events
• Filtering
• Documentation
• Windows port (Help welcome to handle shared libraries...)

Not implemented yet (patches are welcome)

• Methods
• History
• Authentication
• Certificates handling

see examples in src/examples folder or the examples in python repository