Coreflux
Coreflux: An MQTT broker with industrial connectors and automation, but a costly Growth tier. Ranked #26 of 46 in MQTT Broker Software by our editors (6.6/10); pricing: Free plan · 30-day trial; best for industrial IoT teams connecting equipment and systems.
At a glance
- Editor score6.6 / 10
- PricingFree plan · 30-day trial
- Best forIndustrial IoT teams connecting equipment and systems
- Free planYes
- Paid from$2,450/unit/yr
- Facts checked14 Nov 2026
Where it wins
- Native connectors include Modbus, OPC UA, Siemens S7, and Allen-Bradley
- LoT automation combines Actions, Models, Rules, and Python functions
- Routes MQTT data to databases, REST APIs, cloud services, and other brokers
Where it doesn't
- Growth costs $2,450 per node per year
- Growth limits native IT connectors to five per node
- HA and clustering are available only on Enterprise
Our verdict on Coreflux
Coreflux combines an MQTT broker with industrial connectors and an automation runtime for integrators and teams connecting equipment, devices, and business systems. It supports TCP, TLS, and WebSocket connectivity, and can be deployed self-hosted or managed. The Community plan includes up to three native OT/IT connectors, dashboards, and Coreflux Hub, making it a way to explore its core broker and automation capabilities. Teams needing broader connector coverage or high availability should assess the paid tiers before choosing it.
The plans divide access by connector capacity and operational needs. Community is free and includes Windows, Linux, and Docker support, plus LoT automation with Actions, Models, and Rules. Growth costs $2,450 per node per year, billed annually; it adds unlimited native OT connectors and up to five native IT connectors per node, with Coreflux or partner support. Enterprise lists unlimited nodes, HA/clustering, BYOC, OIDC single sign-on, and RBAC. That makes Growth a significant per-node commitment, while requirements for clustering or the listed enterprise controls point to Enterprise.
Coreflux’s main distinction is combining message routing with native industrial protocols and data handling. Connectors include Modbus, OPC UA, Siemens S7, Allen-Bradley, and FINS; routes can send data to PostgreSQL, MongoDB, InfluxDB, CrateDB, OpenSearch, Kafka, REST APIs, cloud services, and other brokers. Python functions can be called from LoT actions, with dashboards and a data viewer in Coreflux Hub. This breadth may suit industrial integration projects that need to connect equipment and process or route data in one system. Teams seeking only a straightforward MQTT broker, or those that need clustering without Enterprise, may prefer a narrower alternative.
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Coreflux pricing
All 3 Coreflux plans and prices →
Coreflux fact sheet
| Free plan | Yes |
|---|---|
| Paid from | $2,450/unit/yr |
| Deployment model | Not verified |
| MQTT versions | 3.1.1, 5.0 |
| Retained messages | Not verified |
| Clustering | Yes |
| Connection limit | Not verified |
| Authentication methods | Not verified |
| Free trial | 30 days |
| Deployment | Cloud, Self-hosted |
| Platforms | Windows, Linux, Web |
| Compliance & security | GDPR, SOC 2, ISO 27001 |
| Support | Community |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 12 integrations: Modbus, OPC UA, Siemens S7, Allen-Bradley, FINS, PostgreSQL … |
| Pricing | Free plan · 30-day trial (source) |
| Website | coreflux.org |
| Facts checked | 14 Nov 2026 |
Coreflux integrations
Coreflux lists 12 integrations on its own site.
- Modbus
- OPC UA
- Siemens S7
- Allen-Bradley
- FINS
- PostgreSQL
- MongoDB
- InfluxDB
- CrateDB
- OpenSearch
- REST API
- Kafka
Alternatives to Coreflux
- AWS IoT CoreA managed MQTT broker with device tools and message routing for AWS-centric IoT systems.9.4
- Azure Event Grid MQTT brokerA managed MQTT broker with Azure routing, flexible authentication, and usage-based pricing.9.2
- Apache BifroMQA self-hosted broker with clustering, distributed storage, and support for MQTT 3.1 through 5.0.9.1
See all Coreflux alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026
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