Open Source Messaging
Messaging platforms that are available as open source, providing flexible deployment options and community support.
Updated June 21, 2026
Products that define this theme
A representative set of Message Queue (MQ) Software products that exemplify Open Source Messaging, curated as a starting point for finding similar software.
Selected from G2's verified user reviews and ratings, then matched to this theme for relevance.
How Did G2 Choose These Open Source Messaging Products?
The 6 products shown represent a defining sample for the "Open Source Messaging" theme within Message Queue (MQ) Software on G2 — not an exhaustive list. They are a curated starting point for discovering similar software.
- Sourced from products with verified G2 user reviews and ratings.
- Matched to this theme based on each product's described capabilities and fit, ordered by relevance.
- Rankings and inclusion are unbiased and are not influenced by vendor payment.
Refreshed weekly. Last updated: June 21, 2026.
Apache Kafka is an open-source distributed event streaming platform developed by the Apache Software Foundation. It is designed to handle real-time data feeds with high throughput and low latency,...
RabbitMQ is the most popular open source message broker, with more than 35,000 production deployments world-wide. RabbitMQ is lightweight and easy to deploy on premises and in the cloud and runs on...
Apache RocketMQ is an open source distributed messaging and streaming data platform.
Apache Qpid is an open-source messaging system designed to implement the Advanced Message Queuing Protocol.
Apache ActiveMQ is a popular and powerful open source messaging and Integration Patterns server.
Real-time data is fundamental to the digital business that must operate at unprecedented speeds and agility, demanding a messaging system with high performance, throughput, and availability to...