HiveMQ MQTT Broker vs IronMQ

HiveMQ MQTT Broker provides event-driven messaging between connected devices and enterprise systems. It supports MQTT 3.1.1 and MQTT 5.0, with persistent messages stored to disk, offline queuing, and quality-of-service support. Dynamic clustering lets operators add or remove broker nodes while the cluster runs. Extensions connect to streaming services, databases, data warehouses, and security services, with Kafka, Amazon Kinesis, and Google Pub/Sub listed as examples. Security options include TLS 1.2/1.3, mutual TLS, fine-grained access controls, pluggable authentication such as OAuth 2.0 and LDAP, and audit logging. The self-managed broker can run on private, hybrid, and public clouds, with images for Kubernetes, OpenShift, and DC/OS. In evaluation mode without a valid license, it supports up to 25 client connections. HiveMQ describes the broker as intended for large-scale IoT deployments and mission-critical enterprise operations. Plans include a free option; Launch is $299 a month and Run is $499 a month. Other listed plans have no price listed.

IronMQ is a persistent message queue for communication between services and components in distributed applications. It supports push and pull queues, long polling, error queues, alerts, and triggers, as well as dead-letter queues and ordering within each queue. Delivery is described as best-effort and one-time, a behavior application teams should account for in message handling. Its HTTPS and REST-based APIs support HTTP/REST, Amazon SQS, and OpenStack Marconi protocols. During an outage, queues can automatically point to alternative availability zones without code changes. Deployment options include shared, dedicated, and on-premise environments. Documentation lists client libraries for Go, Ruby,.NET, Java, PHP, Python, Node, and Rust, plus community-supported Apache Camel and Clojure libraries. Iron.io says OAuth and SSL protect data in transit, and recommends client-side encryption for especially sensitive payloads at rest. The free Basic plan includes 100K API requests per month, limited queues, and a 64k message size limit. Entry costs $399 a month; a full-feature 14-day trial is offered for non-dedicated clusters.