For PC based platforms you can use all of our OPC UA SDKs. Your choice may depend on the existing software you already have. For an easy integration you may choose the same language your product was written in.
For tiny, fast OPC UA applications with minimum resource consumption and high speed measurement devices.
The C++ based OPC UA SDK gives the highest flexibility on PC based platforms, it can operate several data sources simultaneously (e.g. several field bus drivers)
On Windows PC based systems and when you don’t need platform independence, the .NET based OPC UA SDK would be a good choice for you.
You can also go for the Java based OPC UA SDK when you want to be able to easily switch between operating systems, without re-compilation.