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Message Queue Software

Message queue software: open-source brokers, commercial and cloud queues, task queues and messaging standards.

35 topics•6 categories•Updated October 2026

What Is a Message Queue?

9 entries

A message queue lets one part of a system send work or events to another asynchronously: producers put messages on a queue and consumers take them when ready. Queues decouple services, absorb load spikes and enable retries. Brokers range from classic queue servers to log-based streaming platforms. Descriptions below follow each project's or vendor's own pages and are not rankings; release facts come from GitHub, PyPI and npm.

01Event Brokering SoftwareEvent broker products, on this site. 02Apache Kafka ResourcesKafka and its ecosystem, on this site. 03MQTT BrokersBrokers for IoT messaging, on this site. 04Event-Driven Architecture (EDA)EDA hub, on this site. 05EDA ResourcesGuides and standards for EDA, on this site. 06Streaming Analytics PlatformsStream processing platforms, on this site. 07Microservices Architecture (MSA)Microservices hub, on this site. 08Publish/Subscribe (Pub/Sub) MessagingCloud pub/sub, brokers, MQTT and real-time messaging, on this site. 09Stream Processing FrameworksFlink, Kafka Streams, Spark, ksqlDB and streaming databases.

Open-Source Message Queues and Brokers

9 entries

Self-hosted brokers and messaging libraries.

10RabbitMQOpen-source message broker supporting AMQP and other protocols, with quorum queues for replication; GitHub lists v4.4.0 (19 October 2026) as the latest release. 11Apache ActiveMQOpen-source multi-protocol Java message broker; GitHub lists activemq-6.4.0 (22 October 2026) as the latest release. 12Apache ActiveMQ ArtemisNext-generation Apache broker with JMS and multi-protocol support, developed as a separate component of the ActiveMQ project. 13NATS JetStreamPersistence layer of NATS that adds streams and consumers; GitHub lists v2.15.2 (26 October 2026) as the latest nats-server release. 14Apache RocketMQDistributed messaging and streaming platform from Apache; GitHub lists rocketmq-all-5.5.1 (20 August 2026) as the latest release. 15Apache PulsarDistributed messaging and streaming platform with queue and streaming semantics; GitHub lists v5.0.1 (26 October 2026) as the latest release. 16ZeroMQOpen-source universal messaging library rather than a broker; its latest libzmq release on GitHub, v4.3.5, dates from October 2023, so check its activity. 17NSQRealtime distributed messaging platform; GitHub lists v1.3.0 (December 2023) as the latest release. 18BeanstalkdSimple, fast work queue; its latest GitHub activity dates from March 2025, so check its status.

Commercial Brokers and Managed Services

5 entries

Vendor products and hosted services built on open or proprietary brokers.

19IBM MQIBM describes a family of middleware products for point-to-point and publish-subscribe messaging, available as SaaS, an appliance or self-hosted. 20Solace PlatformSolace describes a real-time data platform for moving data between applications and AI agents. 21Oracle Advanced Queuing and TxEventQOracle describes AQ and TxEventQ as messaging built into Oracle Database for application workflows. 22CloudAMQPHosted RabbitMQ service; the vendor describes managed servers for decoupling applications. 23KubeMQKubeMQ markets a messaging platform that it says can replace Kafka; these performance and cost claims are the vendor's own and were not verified.

Cloud Messaging Services

6 entries

Managed queue and messaging services from the major clouds.

24Amazon SQSAWS describes fully managed message queuing for decoupling and scaling microservices, distributed systems and serverless applications. 25Amazon SNSAWS describes a managed messaging service for decoupled applications and direct delivery to users by SMS, push and email. 26Amazon MQAWS describes a managed message broker service for Apache ActiveMQ and RabbitMQ. 27Azure Service BusMicrosoft describes a fully managed serverless message broker for reliable communication between applications and services. 28Azure Queue StorageMicrosoft describes a service for storing large numbers of messages. 29Google Cloud Pub/SubGoogle documentation explaining how Pub/Sub works and its terminology.

Task and Job Queues

3 entries

Libraries that run background jobs on top of a broker.

30CeleryDistributed task queue for Python; PyPI lists 5.6.3 (26 March 2026) as the latest stable release and GitHub shows v5.7.0rc1 (18 October 2026). 31BullMQNode.js queue library built on Redis; npm lists 6.5.3 (31 October 2026) as the latest release. 32Redis StreamsRedis documentation introducing streams, an append-only log data type used for queue-like workloads.

Standards

3 entries

Messaging protocols and APIs.

33AMQPAdvanced Message Queuing Protocol, the open standard supported by brokers such as RabbitMQ. 34AMQP 1.0 specification (OASIS)The OASIS AMQP 1.0 core specification. 35Jakarta MessagingJakarta EE specification describing how Java applications create, send and receive messages through loosely coupled asynchronous communication.

Frequently Asked Questions

What is a message queue?

A component that stores messages from producers until consumers process them, so services can communicate asynchronously. Queues decouple systems, smooth load spikes and allow retries.

What is the difference between a message queue and a message broker?

A queue is the data structure that holds messages, while a broker is the server that manages queues, routing and delivery. RabbitMQ and ActiveMQ are brokers that expose queues and topics.

Message queue or Kafka?

Queue brokers such as RabbitMQ and SQS suit task distribution, where each message is consumed once and then removed. Kafka and other log-based platforms retain ordered events so many consumers can replay them. See the Apache Kafka Resources and Event Brokering Software pages.

What is a dead-letter queue?

A queue where messages are moved after repeated processing failures or expiry, so they can be inspected without blocking the main queue. Most brokers and cloud services support it.

Should I self-host or use a managed queue?

Managed services such as Amazon SQS, Azure Service Bus and Google Pub/Sub remove operations work, while self-hosted RabbitMQ or ActiveMQ give control over protocols and data placement. Amazon MQ and CloudAMQP offer managed versions of open-source brokers.

How current is this page?

Links and release facts were checked on 31 October 2026 from GitHub, PyPI and npm. Vendor descriptions follow their own pages and are not rankings, and the KubeMQ performance claims are the vendor's own.