FreeOpcUa is a project to implement an open-source (LGPL/GPL) OPC-UA stack and associated tools.

Currently FreeOpcUa is composed of:

• An asynchronous LGPL Python OPC-UA client and server library: https://github.com/FreeOpcUa/opcua-asyncio also including sync wrappers. this iscurrently the most active project
  • Install using pip install asyncua
  • Command line tools can be found in the tools subdirectory (doc)
• A GPL Python GUI client: https://github.com/FreeOpcUa/opcua-client-gui
  • Install using pip install opcua-client

The following projcts are deprecated or not maintained anymore:

• A synchronous LGPL Python OPC-UA client and server library (written entirely in Python): https://github.com/FreeOpcUa/python-opcua
  • Install using pip install opcua
  • Command line tools can be found in the tools subdirectory (doc)
• A LGPL C++ library to develop server and client OPC-UA applications: https://github.com/FreeOpcUa/freeopcua (CURRENTLY UNMAINTAINED)
  • Python bindings can be found in the python subdirectory
• A GPL Python GUI to create OPC-UA nodes and save them to xml: https://github.com/FreeOpcUa/opcua-modeler
  • Install using pip install opcua-modeler
• Discussions: https://github.com/FreeOpcUa/python-opcua/discussions and https://github.com/FreeOpcUa/opcua-asyncio/discussions
• Source code: https://github.com/FreeOpcUa

Screenshot of client GUI:

Screenshot of modeler: