Now in beta · v0.1.0-beta.7
The OPC UA client that runs in your browser
Browse the address space, read and write node values, and watch live data from any OPC UA server. No installs. The browser never speaks OPC UA — a secure gateway does.
No installs
Everything runs in the browser — nothing to download or update.
Secure by design
A hardened gateway speaks OPC UA on your behalf.
Live values
Subscribe to nodes and watch them update in real time.
Frequently asked questions
What is UANode?
UANode is a free online OPC UA client. It connects to any OPC UA server so you can browse the address space, read and write node values, call methods, and watch live subscriptions — all from your browser.
Do I need to install anything?
No. Unlike desktop OPC UA clients such as UaExpert or the Prosys OPC UA Browser, UANode runs entirely in the browser. A secure gateway speaks opc.tcp on your behalf, so there is nothing to download, install, or update.
Which OPC UA servers does it work with?
Any standards-compliant OPC UA server: PLCs, SCADA systems, IIoT gateways, historians, and simulators. You can try it right away against the free public demo server.
Is it secure?
Your browser never speaks OPC UA directly. A hardened gateway handles endpoints, security modes and policies (such as Basic256Sha256), and certificates for you.