# Mosquitto vs OpenPLC Runtime v4

> Two self-hosted [IoT projects](https://selfhost.directory/iot), compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.

| | Mosquitto | OpenPLC Runtime v4 |
|---|---|---|
| Score | 76/100 ✓ | 52/100 |
| Rank in category | #1 of 10 in IoT | #6 of 10 in IoT |
| GitHub stars | 11 306 ✓ | 416 |
| Stars, last 30 days | +86 | — |
| Stable releases, 12 months | 0 | 10 ✓ |
| Latest release | — | v4.3.1 · 13 Oct 2026 |
| Setup | Moderate ✓ | Moderate |
| Official Docker image | No | Yes ✓ |
| License | Other | MIT |
| Main language | C | Python |

## Which one should you pick?

Mosquitto scores 76/100 against 52/100 for OpenPLC Runtime v4, so it is the safer default.

OpenPLC Runtime v4 ships more often: 10 stable releases in the past year, against 0 for Mosquitto.

Mosquitto is growing faster right now (+86 stars in 30 days).

## Details

- [Mosquitto](https://selfhost.directory/project/mosquitto) (markdown: https://selfhost.directory/project/mosquitto.md)
- [OpenPLC Runtime v4](https://selfhost.directory/project/openplc-runtime) (markdown: https://selfhost.directory/project/openplc-runtime.md)

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Source: https://selfhost.directory/compare/mosquitto-vs-openplc-runtime