Cassandana

At a glance

• Editor score
  5.1 / 10
• Pricing
  Free plan
• Best for
  Teams wanting a free broker with database-backed access
• Free plan
  Yes
• Paid from
  Free
• Deployment model
  Self-hosted
• Facts checked
  14 Nov 2026

• Where it wins

  • Supports MQTT QoS 0, 1, and 2, plus TLS and WebSocket connections
  • Authenticates and authorizes through databases, Redis, or an HTTP REST API
  • Offers optional message archiving and in-memory caching

• Where it doesn't

  • Requires teams to run and maintain their own broker
  • Configuration uses YAML, and installation involves a release or a Maven build
  • Listed authentication backends are limited to specific databases, Redis, and REST

Our verdict on Cassandana

Cassandana is an open-source MQTT message broker written in Java for developers and organizations that want to run and configure their own broker. It supports QoS 0, 1, and 2, TLS encryption, and WebSocket connections, with YAML configuration. Its self-hosted model suits teams that want control over broker deployment and can take responsibility for operating it; it is less suitable for buyers seeking a managed service.

Access control is a notable part of its feature set. Authentication and authorization can use MySQL, PostgreSQL, MongoDB, Cassandra, Redis, or an HTTP REST API. The project also lists permit-all and deny-all methods. In-memory caching and optional MQTT message archiving add capabilities around access and message handling. Teams whose existing systems use the listed databases or Redis may find the documented integration choices relevant, while those depending on other authentication systems should assess fit before choosing it.

The deployment approach puts setup and ongoing operations on the adopting team: Cassandana can be installed from a release or built from source with Maven, then configured using YAML. That gives teams a self-managed option without a listed paid tier, but also means they need the skills and infrastructure to deploy and maintain a broker. Choose Cassandana if you want an open-source, self-hosted broker with database-backed access controls and the listed MQTT connection options. Consider another product if you need a managed service or require integrations beyond the documented backends.

Your product? Our editors can test Cassandana in depth and publish a review, labelled as paid · from $149/mo →

Cassandana pricing

Cassandana fact sheet

Cassandana integrations

Cassandana lists 5 integrations on its own site.

• MySQL
• PostgreSQL
• MongoDB
• Cassandra
• Redis

Alternatives to Cassandana

• AIAWS IoT CoreA managed MQTT broker with device tools and message routing for AWS-centric IoT systems.9.4
• AEAzure Event Grid MQTT brokerA managed MQTT broker with Azure routing, flexible authentication, and usage-based pricing.9.2
• ABApache BifroMQA self-hosted broker with clustering, distributed storage, and support for MQTT 3.1 through 5.0.9.1

See all Cassandana alternatives →

Featured on iTechGuides

Cassandana is listed in our MQTT Broker Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026

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Last updated 14 Nov 2026 · How we research and update