INSPECTOR · READ-ONLYSee what the endpoint is actually doing.
Connect, inspect and keep the evidence.
community toolsGet the tools Free tools for industrial protocols
Diagnostics · simulation · live bridging · field calculators
Inspect it. Recreate it. Solve it.
Download Inspector and Emulator for Windows, or use the field calculators in your browser. They are free, practical and ready to use without an account. If something is good—or bad—tell us. We will make the next build better together.
Free Windows downloadsNo account requiredInspector is read-only
From live endpoint to a safe lab
EMULATOR · CONTROLLED LABRecreate the condition without risking the real device.
Change the behaviour and test your assumptions.
EtherNet/IPModbus TCPOPC UASNMPS7BACnet/IPMQTTSLMP
00 / HOW IT WORKS
Download it. Use it. Tell us what worked—and what did not.
A short note is enough.
Useful feedback becomes a clearer workflow, a fixed edge case or a better tool.
01 / DOWNLOADS
Choose the tool that fits the problem.
Inspect what is happening at the endpoint, recreate the condition safely, or decode the data directly in your browser.
READ-ONLY DIAGNOSTICSFREE
ProtoCall
Inspector
Prove the difference between network reachability and protocol truth.
- Inspect industrial endpoints without writing to controllers
- Run bounded diagnostics across common OT protocols
- Capture repeatable evidence instead of relying on screenshots
- Compare a live result with a known-good baseline
FREE WINDOWS BUILD · X64v2.0.13 · 59.0 MB
Unsigned test build—Windows may display an Unknown Publisher warning.
The boundary: diagnostics and evidence—not PLC programming or control.
CONTROLLED TEST BENCHFREE
ProtoCall Lab
Emulator
Create a predictable industrial peer when the real device is unavailable—or too important to experiment on.
- Simulate common industrial protocol sources locally
- Inject reversible delay, silence and response faults
- Observe destinations and retain deterministic evidence
- Build repeatable training, recovery and commissioning scenarios
FREE WINDOWS BUILD · X64v0.17.2 · 53.7 MB
Unsigned test build—Windows may display an Unknown Publisher warning.
The boundary: a controlled lab companion, loopback-safe by default.
02 / PROTOCOL BRIDGE
ProtoCall
Bridge
When a test needs to become a dependable data path, Bridge connects industrial sources and destinations without tying the solution to a dedicated protocol card.
Enquire about ProtoCall Bridge →Windows desktop first. Industrial PC and ARM / Raspberry platform profiles follow after field validation.
Bridge a commissioning gap.
Use it during migrations, cutovers, trials and proof-of-concept work where the data path may only be needed for a bounded period.
Retain the working route.
Run the validated configuration as a managed service for an ongoing protocol exchange on the host you control.
- Choose the adaptersUse selected physical Windows or TAP interfaces and retain the bridge selection.
- Connect and mapConfigure protocol sources, catalogue signals and route selected data to the required destination.
- Expose servicesProvide managed northbound services such as OPC UA from the same local runtime.
- Operate with evidenceStage changes, inspect diagnostics and retain activity through the local management interface.
NOW Windows x64 pilotNEXT Industrial PC profileROADMAP ARM / Raspberry profile
03 / FEEDBACK
Found something useful? Or something wrong? Tell us.
You do not need to write a report. Tell us which tool you used, what you expected and what actually happened. Good and bad feedback are equally useful.
Send feedback →What worked
The result that saved time, explained the problem or gave you evidence you could use.
What did not
The rough edge, confusing label or result that made you stop trusting the tool.
What is missing
The controller, protocol or awkward field case you wish the toolkit covered next.
04 / THE SIMPLE DEAL
Use the tools. Keep the evidence. Share what matters.
- 01Download or open
Use a Windows build or one of the browser tools.
- 02Try a real scenario
Start with the protocol problem already in front of you.
- 03Keep the result
Save the useful evidence—or the point where it went wrong.
- 04Send a short note
Your experience helps decide what should be fixed or built next.
FREE PROTOCOL TOOLS