Install our lightweight Windows agent (reads a COM port), streams telemetry with offline buffering, and view it live in our built-in dashboard — or consume it via simple REST & SSE APIs.
Affordable & hobbyist-friendly: 14-day free trial, then just $15/month (USD). No lock-in.
60-second tour: Windows agent reads a COM port, buffers offline, and streams into the SigStream dashboard in real time (SSE).
Per-device keys keep data clean and tenant-safe.
Reads telemetry from a COM port, buffers offline, and forwards securely.
Use our dashboard, or integrate via REST & EventSource (SSE).
Low-latency updates for dashboards and dev tools with browser-native SSE.
Never lose data — offline buffering + backpressure for patchy networks.
Curl, fetch, and EventSource examples; JSON payloads you control.
Per-device keys mapped to owners; safe by default for shared fleets.
Clean UI out of the box — ideal if you don’t want to write front-end code.
$15/month after a 14-day free trial. USD.
“Got serial data streaming to a web UI in under 10 minutes. The SSE feed is perfect.”
“Offline buffering saved a field test. Data backfilled when the truck got signal again.”
“No Kafka, no infra drama. Simple keys per device and a clean dashboard.”
“Exactly what we needed for demos — reliable live charts without custom backend work.”
“Got serial data streaming to a web UI in under 10 minutes. The SSE feed is perfect.”
“Offline buffering saved a field test. Data backfilled when the truck got signal again.”
“No Kafka, no infra drama. Simple keys per device and a clean dashboard.”
“Exactly what we needed for demos — reliable live charts without custom backend work.”
curl -H "X-API-Key: YOUR_DEVICE_API_KEY" \
"https://sigstreamcloud.com/devapi/telemetry?limit=50"<script>
const es = new EventSource("/devapi/stream?api_key=YOUR_DEVICE_API_KEY");
es.addEventListener("telemetry", (e) => console.log(JSON.parse(e.data)));
es.addEventListener("heartbeat", (e) => console.log("hb", JSON.parse(e.data)));
</script>Affordable & hobbyist-friendly • 14-day free trial • Cancel anytime • Charged in USD
Full access: Windows agent (COM port), built-in dashboard, REST & SSE APIs.
Trial: 7 days per device
Paid: 30 days per device
Nightly purge runs automatically.
We store only the telemetry you send. See our Privacy Policy.