an implementation of a OPC UA stack fully written in javascript and nodejs - http://node-opcua.github.io/
node-opcua is a full OPC-UA stack implementation written in JavaScript and NodeJS, providing an open-source solution for industrial communication and automation. It is designed for developers building OPC-UA servers, clients, or applications that need to interact with industrial systems and devices using the OPC-UA protocol.
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Kivach works on the Obyte network, and therefore you can track all donations.