List of Open Source OPC UA Implementations

There are some more open source implementations of OPC UA. In different languages and with different licenses. We try to collaborate with them to exchange experiences and ideas.

Name	Language	License	Client/Server	Link
open62541	C	MPL-2.0	Client and Server	http://open62541.org/
UA.NET Standard	C#	GPL, RPC for OPC Foundation Members	Client and Server	https://github.com/OPCFoundation/UA-.NETStandard
node-opcua	JavaScript	MIT	Client and Server	http://node-opcua.github.io/
FreeOpcUa	C++	LGPL	Client and Server	http://freeopcua.github.io/
BaOpcUa	Lua	GPL + commercial license. Lua source code can be found inside mako.zip	Client/Server	https://realtimelogic.com/products/opc-ua/
Python FreeOpcUa	Python	LGPL	Client and Server	https://github.com/FreeOpcUa/opcua-asyncio
OpenOpcUa	C++	Cecill-C, source code access costs a one-time fee for non commercial use and a paid support and maintenance for commercial use.	Client and Server	http://www.openopcua.org/
OpenScada UA Interface	C++	GPL	Server	http://oscada.org/websvn/...
ASNeG	C++	Apache	Server and Client	Git Repository
Eclipse Milo	Java	Eclipse Public License	Stack / Client / Server	https://github.com/eclipse/milo
opcua4j	Java	Creative Commons 3.0 BY-SA, depends on redistributable jar-files from the OPC Foundation	Server	https://code.google.com/p/opcua4j/
uaf	C++/Python	GNU Lesser General Public License	Client (wrapper over proprietary sdk)	https://github.com/uaf/uaf
opc-ua-client	C#	MIT	Client	https://github.com/convertersystems/opc-ua-client
UACL/CS	C#	LGPL	Client/Server (wrapper over proprietary sdk)	https://gitlab.com/falko.wiese/uacl_cs
UACL/CPP	C++	LGPL	Server(wrapper over proprietary sdk)	https://gitlab.com/falko.wiese/uacl_cpp
S2OPC	C	Apache	Client/Server	https://gitlab.com/systerel/S2OPC
OPC UA Player	Java	MIT	Server Simulation	https://github.com/MileBuurmeijer/OPCUA-Player
opcua	Rust	MPL-2.0	Client and Server	https://github.com/locka99/opcua
opcua	Golang	MIT	Client	https://github.com/gopcua/opcua
LibUA	C#	Apache 2.0	Client + Server	https://github.com/nauful/LibUA
opcua	TypeScript	MIT	Client	https://github.com/HBM/opcua
Apache PLC4X	Java	Apache	Client	https://plc4x.apache.org/users/protocols/opc-ua.html (prior PLC4X release 0.9 it was wrapper around Eclipse Milo. Starting from 0.9 it is standalone client implementation)