The only MQTT broker your security team will approve and your OT team will trust.
Zero dependencies. Sparkplug B native. Formally verified. Pure Rust.
0
runtime dependencies
1,100+
verified tests
826 KB
minimal binary
100%
Sparkplug B conformance
6M
fuzz inputs, 0 panics
Zero Trust Surface
Your SBOM is one line. No OpenSSL, no libc, no supply-chain risk.
Sparkplug B Native
100% Aware conformance. Catches malformed traffic at ingress.
Formally Verified
Mathematical proofs, concurrency analysis, and 6M-input fuzz campaign.
Edge-First
826KB to 2.3MB. Runs on Raspberry Pi to data center.
How RelayQ compares
| Feature | RelayQ | Mosquitto | NanoMQ | EMQX |
|---|---|---|---|---|
| MQTT 3.1.1 full conformance | ✅ | ✅ | ✅ | ✅ |
| Zero runtime dependencies | ✅ | 15+ | 10+ | 200+ |
| Sparkplug B Aware mode | ✅ | — | — | — |
| Formal verification | ✅ | — | — | — |
| Memory safety (language) | ✅ Rust | C | C | ✅ Erlang |
| Container image size | 2.3 MB | ~10 MB | ~10 MB | ~200 MB |
| Built-in Prometheus metrics | ✅ | plugin | — | ✅ |
| Clustering | — | — | — | ✅ |
| MQTT 5.0 | — | ✅ | ✅ | ✅ |
Performance
~1M
msg/s QoS 0
<5ms
p99 latency
2.3 MB
container image
<50ms
startup time
90-day pilot. No credit card. No strings.
Full-featured broker. Your environment. Our support.
Request Pilot License