2021-OPC 统一架构规范: 此规范是 OPC UA 应用程序开发人员的规范。该规范是分析和设计过程的结果，用于开发标准接口，以便多个供应商开发无缝集成的应用程序。
OpenSource
OPC-UA GUI Client
: Written using freeopcua python api and pyqt. Most needed functionalities are implemented including subscribing for data changes and events, write variable values listing attributes and references, and call methods. PR are welcome for any whished improvments
Showcase
2018-opcua-tools
: OPC UA Tools (Unified Architecture)标准工具，包括服务器和客户端，并提供调用接口（服务器和客户端）
: Written using freeopcua python api and pyqt. Most needed functionalities are implemented including subscribing for data changes and events, write variable values listing attributes and references, and call methods. PR are welcome for any whished improvments: OPC UA Tools (Unified Architecture)标准工具，包括服务器和客户端，并提供调用接口（服务器和客户端）