Apache ActiveMQ vs HiveMQ MQTT Broker

Apache ActiveMQ is an open-source messaging and Integration Patterns server for applications that exchange messages. It is self-hosted and supports OpenWire, STOMP, AMQP 1.0, MQTT 3.1, and REST. Listed client languages include Java, C, C++, C#, Ruby, Perl, Python, and PHP. Messaging features include message groups, virtual and composite destinations, wildcards, and enterprise integration patterns. ActiveMQ fully supports JMS 1.1 and J2EE 1.4+ messaging, including transient, persistent, transactional, and XA modes; support for Jakarta Messaging 3.1 and JMS 2.0 is partial. Transport options include in-VM, TCP, SSL, NIO, UDP, multicast, JGroups, and JXTA, with JDBC persistence and a high-performance journal. Browser access is available through a REST API and Ajax web streaming. Security options include pluggable providers, JAAS authentication, XML-configured authorization, and user, group, and destination permissions. ActiveMQ Classic costs nothing under the Apache License 2.0.

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.