List of the Top 20 MQTT Brokers for Linux in 2025

HiveMQ stands out as the most trusted MQTT platform for enterprises, designed specifically to facilitate connections through MQTT, ensure dependable communication, and manage IoT data effectively. Its versatility allows for deployment in various environments, whether on-premise or in the cloud, granting developers the adaptability they require as their IoT projects expand. Known for its reliability even under challenging conditions, HiveMQ scales effortlessly and incorporates enterprise-level security features that cater to organizations at any phase of their digital transformation journey. Furthermore, this flexible platform enables smooth integration with top data streaming services, databases, and analytics tools, while also providing a customizable SDK to seamlessly integrate into any technological ecosystem. As IoT demands continue to evolve, HiveMQ remains a pivotal resource for businesses aiming to leverage cutting-edge technology.

Tatsoft's FactoryStudio equips users with the essential tools to swiftly create robust and secure industrial applications. Its features encompass real-time data modeling and logging, an MQTT client/broker, comprehensive audit trails, alarms and incidents management, a visual SQL query gateway, high-performance smart screens, and HTML5 dashboards, along with WPF drawing tools, an iOS app, trend analysis, annotations, reporting capabilities, and much more! You have the flexibility to write programming scripts using C#, VB.NET, or JavaScript. With a hassle-free setup that requires no client installation and only a minimal two-minute server-side setup, you can get started almost instantly. The platform boasts a wide variety of native protocol drivers for PLCs and DCSs, in addition to compatibility with industry standards such as OPC and MQTT. If you require a specific driver that is not currently available, a toolkit is also provided to assist you in developing custom protocol drivers! FactoryStudio serves as the central data hub for your industrial ecosystem, effectively connecting IT, OT, real-time devices, and SQL data sources seamlessly while enhancing operational efficiency. This integration not only streamlines processes but also fosters better decision-making and data utilization across the board.

EMQX is an exceptionally scalable and dependable MQTT messaging platform crafted by EMQ, capable of handling a staggering 100 million simultaneous IoT device connections per cluster, all while ensuring incredibly high throughput and latencies measured in sub-milliseconds. With over 20,000 users globally across more than 50 nations, EMQX successfully connects in excess of 100 million IoT devices and has earned the trust of over 300 clients in essential IoT applications, featuring prominent names such as HPE, VMware, Verifone, SAIC Volkswagen, and Ericsson. Our versatile edge-to-cloud IoT data solutions cater to the diverse needs of various sectors undergoing digital transformation, including connected vehicles, industrial IoT, oil and gas, telecommunications, finance, smart energy, and smart cities. EMQX Enterprise stands out as the leading scalable MQTT messaging platform, offering 100 million concurrent MQTT connections, a message throughput of 1 million messages per second with under 1 millisecond latency, and business-critical reliability with an SLA of up to 99.99%. Additionally, it enables seamless integration of IoT data with more than 40 cloud services and enterprise systems. Meanwhile, EMQX Cloud serves as a fully managed MQTT service for IoT, allowing users to scale according to their needs and pay based on usage, alongside offering extensive IoT data integration options with over 40 choices. With operational capabilities across 19 regions on AWS, GCP, and Microsoft Azure, EMQX Cloud ensures 100% MQTT compliance for its users. The combination of these features positions EMQX as an unrivaled solution in the realm of IoT messaging platforms.

The Open Automation Software IIoT platform supports both Windows and Linux, enabling users to harness their Industry 4.0 data efficiently. OAS serves as an unrestricted IoT Gateway compatible with various systems, including Windows, Linux, Raspberry Pi 4, and Windows IoT Core, and it facilitates the deployment of Docker containers. It offers HMI visualizations for web applications, as well as WPF and WinForm C# or VB.NET applications. Data logging capabilities extend to SQL Server, MS Access, Oracle, MySQL, Azure SQL, PostgreSQL, and Cassandra for alarms and logs. The platform includes both MQTT Broker and Client interfaces, providing seamless cloud connectivity to Azure IoT Gateway and AWS IoT Gateway. Users can leverage remote Excel Workbooks for data reading and writing, while alarm notifications can be sent through voice alerts, SMS, and email. Access to programmatic data is available via REST API and .NET, ensuring flexibility in integration. The system is compatible with a range of Allen Bradley PLCs, including ControlLogix, CompactLogix, GuardLogix, Micro800, MicroLogix, SLC 500, and PLC-5. Additionally, it supports Siemens PLCs such as S7-220, S7-3300, S7-405, S7-490, S7-1200, and S7-1500. Communication protocols include Modbus TCP, RTU, and ASCII for both Master and Slave configurations. Furthermore, the platform is compatible with OPTO-22, MTConnect, OPC UA, and OPC DA, enhancing its interoperability within various industrial environments. This extensive functionality makes the OAS platform an invaluable tool for modern industrial automation and data management.

RabbitMQ serves as a nimble messaging solution that can be easily implemented in both on-premises setups and cloud-based environments. Its support for multiple messaging protocols renders it a flexible choice for a variety of applications. Additionally, RabbitMQ can be set up in distributed and federated configurations to meet the needs for high scalability and robust availability. With a large community of users, it is recognized as one of the top open-source message brokers currently available. Companies ranging from T-Mobile to Runtastic utilize RabbitMQ, demonstrating its suitability for both burgeoning startups and established enterprises alike. Moreover, it is designed to work seamlessly across a multitude of operating systems and cloud platforms, providing a rich array of development tools tailored for popular programming languages. Users can take advantage of deployment options including Kubernetes, BOSH, Chef, Docker, and Puppet, which enables smooth integration into their current environments. Developers also have the ability to craft cross-language messaging solutions using a selection of programming languages such as Java, .NET, PHP, Python, JavaScript, Ruby, and Go, thereby broadening its applicability across diverse projects. Ultimately, RabbitMQ’s versatility and compatibility make it an essential tool for modern software development.

Coreflux represents an innovative IoT platform designed to prioritize integration, scalability, and security. At its foundation lies the MQTT Broker, serving as the essential component that enables real-time communication and management of data across various devices, irrespective of their protocols or manufacturers. The platform also features Flux DSL, a unique domain-specific programming language that empowers users to design event-driven workflows and manage complex IoT scenarios effectively. Additionally, the Asset Management system (Flux Assets) oversees a diverse array of IoT assets, ensuring their optimal configuration and performance from sensors to databases. Coreflux's suite of integrated tools provides users with the ability to orchestrate devices, workflows, and automations with precision. Catering to a wide audience, Coreflux is versatile enough to support IoT enthusiasts, enterprises, and developers alike, capable of managing anything from a handful of devices to expansive networks comprising thousands. This adaptability makes Coreflux a compelling choice for anyone looking to streamline their IoT operations.

The Pro Edition of Eclipse Mosquitto serves as an advanced version of the leading MQTT broker, ensuring swift, stable, and dependable data transmission among IoT devices. Unlike its widely-used open-source counterpart, Pro Mosquitto enhances the user experience through features such as professional administration and monitoring for both MQTT brokers and clients, MQTT High Availability, access to MQTT and REST APIs, and improved security and support, making it exceptionally suited for commercial applications. One of the key advantages is its performance, which allows for minimal resource consumption while effortlessly managing up to a million simultaneous connections. Written in C, Pro Mosquitto's lightweight architecture ensures superior efficiency compared to its rivals, and it is capable of functioning on low-spec embedded devices, such as single-core 600MHz ARM processors with just 128MB of RAM. This reliability is further reinforced by its widespread acceptance within the global developer community, boasting over 500 million Docker pulls and a service level agreement (SLA) of up to 99.99%, which underscores its commitment to business continuity. Additionally, our dedicated professional services team is available to assist with any challenges, guaranteeing the successful deployment and maintenance of your projects while also offering tailored support to meet specific needs. With such a comprehensive range of features and services, Pro Mosquitto stands out as a robust solution for organizations looking to optimize their IoT communications.

Solace specializes in Event-Driven Architecture (EDA) and boasts two decades of expertise in delivering highly dependable, robust, and scalable data transfer solutions that utilize the publish & subscribe (pub/sub) model. Their technology facilitates the instantaneous data exchange that underpins many daily conveniences, such as prompt loyalty rewards from credit cards, weather updates on mobile devices, real-time tracking of aircraft on the ground and in flight, as well as timely inventory notifications for popular retail stores and grocery chains. Additionally, the technology developed by Solace is instrumental for numerous leading stock exchanges and betting platforms worldwide. Beyond their reliable technology, exceptional customer service is a significant factor that attracts clients to Solace and fosters long-lasting relationships. The combination of innovative solutions and dedicated support ensures that customers not only choose Solace but also continue to rely on their services over time.

Introducing an MQTT Broker meticulously crafted to fulfill all your needs for implementing and expanding IoT applications. This platform boasts an efficient REST API, a rich dashboard equipped with customizable widgets, and a comprehensive data storage system, among others. Users are empowered to quickly gain insights into their IoT devices, tracking client connections and disconnections alongside vital data via multiple dashboard widgets. The system enhances user experience by offering alerts and color-coded indicators triggered by specific value thresholds. Additionally, it includes a powerful rules engine that transforms MQTT messages to streamline machine-to-machine communication automation, supporting both event-driven and timer-based rules, which allow users to identify data trends and automate relevant responses. For secure communications between devices, it employs a publish and subscribe messaging model reinforced by dual layers of security, featuring SSL/TLS encryption for connectivity and optional username/password authentication. Furthermore, robust web security measures are integrated for safe data access. To maintain high availability, the broker can function with multiple message brokers concurrently, ensuring efficient data collection and message distribution from devices. This architecture guarantees an impressive 99.99% success rate in data retrieval, providing reliability in the face of software challenges. Additionally, the system's adaptability facilitates effortless integration with a variety of IoT applications and services, making it an ideal solution for diverse deployment scenarios. Ultimately, this MQTT Broker stands out as a reliable and versatile choice for any IoT project.

Discover the flexibility of data management with a SQL-based rule engine that integrates smoothly with eKuiper, promoting edge stream processing. This methodology significantly reduces the costs tied to the incorporation of event-driven WebHooks in edge computing applications. The system is crafted for straightforward upkeep and comes with HTTP APIs that are ideal for EdgeOps. Despite its compact design, NanoMQ is remarkably powerful, featuring an extensive array of functionalities that enable it to stand out in a competitive landscape. Featuring a Task Layer that employs a built-in actor model and supports thread-level parallelism, it enhances scalability on modern symmetric multiprocessing systems. Seamlessly extend your ability to leverage multiple cores while keeping CPU usage to a minimum in contemporary SMP setups. Additionally, NanoMQ boasts exceptional compatibility and portability across any POSIX-compliant platform, with an impressively small booting footprint of under 200Kb when utilizing its core features, making it an excellent solution for applications where resources are limited. By leveraging these capabilities, developers can create more efficient and responsive applications tailored to the demands of today's technology landscape.

Mosca works well with all Node.js applications and offers an executable for independent usage. When you execute this file, it enables a connection to your selected MQTT client. In order to make the most of Mosca, it is crucial to establish a configuration file that outlines the communication broker's specifics. This arrangement ensures smooth integration and efficient interaction between your application and the MQTT client, ultimately enhancing the overall functionality of your system. Additionally, understanding the configuration options can further optimize the performance and reliability of your MQTT messaging.

VerneMQ stands out as a flexible open-source solution that offers extensibility and options for enterprise-level support. As a robust and distributed MQTT broker, it is engineered for high performance, enabling both horizontal and vertical scaling on standard hardware to handle numerous simultaneous publishers and consumers while maintaining low latency and strong fault tolerance. This makes it an ideal messaging hub for IoT platforms and smart devices, allowing developers to craft mobile messaging services that operate with considerably lower overhead than XMPP. Such capabilities pave the way for groundbreaking mobile applications that depend on low-latency, bi-directional communication, catering to various domains including urban settings, residential communities, and transportation networks. Whether facilitating mobile asset management or evolving from a small pilot project to a comprehensive industrial solution, VerneMQ proficiently addresses all messaging requirements. It empowers users to oversee and manage their devices in the field, ensuring seamless connections with data centers, backend services, and mobile applications, which solidifies VerneMQ's position as a cornerstone of your communication strategy. With its extensive features, you can trust VerneMQ to harmonize and enhance your messaging workflows across a variety of platforms, ultimately fostering innovation and efficiency in your projects.

MQTTnet is a highly effective library specifically crafted for .NET, streamlining MQTT communication. It encompasses both an MQTT client and a broker, fully supporting the MQTT protocol up to version 5. This library exhibits remarkable versatility, functioning seamlessly with nearly all versions of the .NET Framework and accommodating a variety of CPU architectures. Users have the capability to create custom message interceptors, which empowers them to modify or enhance any incoming application message. Its lightweight nature stems from its emphasis on core MQTT functionality without extraneous overhead. Moreover, MQTTnet supports the concurrent operation of multiple connected clients utilizing different protocol versions, which significantly boosts its flexibility and adaptability for users’ needs. Overall, this library stands out for its practical features and robust performance in diverse scenarios.

ZeroMQ, also known as ØMQ, 0MQ, or zmq, may seem like a simple networking library at first glance, but it actually serves as a powerful concurrency framework. It offers sockets that handle atomic message transmission via different transport methods, including in-process, inter-process, TCP, and multicast. Users can create N-to-N socket connections using various patterns such as fan-out, publish-subscribe, task distribution, and request-reply. Its exceptional speed makes it an ideal choice for the foundation of clustered applications, while its asynchronous I/O architecture supports the creation of scalable multicore applications structured around asynchronous message-processing tasks. Additionally, ZeroMQ is compatible with a broad range of programming languages and works seamlessly across most operating systems, making it an adaptable tool for developers. This versatility not only fosters innovative solutions but also opens up opportunities for new approaches in different programming ecosystems. As a result, developers can leverage ZeroMQ to enhance the performance and scalability of their applications across various platforms.

Fogwing represents a cutting-edge platform for Industrial IoT, equipped with capabilities that enable the development of IoT solutions tailored to diverse industrial applications such as tracking assets, conducting predictive maintenance, and monitoring equipment. Users, regardless of their IT expertise, can effortlessly design and implement automation solutions based on IoT technologies. Additionally, the platform’s advanced data analytics feature facilitates data-driven decision-making, helping to identify potential operational risks and implement proactive measures while reducing total cost of ownership. This ensures that businesses can operate more efficiently and sustainably in a rapidly evolving industrial landscape.

FairCom EDGE simplifies the integration of sensor and machine data right at the source, whether it's in a factory, water treatment plant, oil rig, wind farm, or any other industrial environment. As the world's pioneering converged IoT/Industrial IoT hub, FairCom EDGE combines messaging and data persistence into a single comprehensive solution. It features browser-based tools for administration, configuration, and monitoring, streamlining the user experience. Additionally, FairCom EDGE is compatible with MQTT, OPC UA, and SQL for machine-to-machine (M2M) communication, along with HTTP/REST for real-time monitoring and reporting. The platform consistently gathers data from sensors and devices via OPC UA and captures messages from machinery using MQTT. Moreover, the data is efficiently parsed, stored, and made accessible through MQTT or SQL, ensuring seamless data management across various industrial applications. This robust functionality positions FairCom EDGE as an essential tool for modern industrial data integration.

Cassandana, an open-source MQTT message broker built on Java, emerged from a fork of Moquette and has been significantly upgraded with optimizations and new functionalities. Following extensive enhancements, it has evolved into a robust messaging solution suitable for enterprise environments. The architecture incorporates an in-memory caching system that reduces input/output operations, resulting in enhanced performance and efficiency. Furthermore, ongoing development efforts are focused on adapting the platform to the changing requirements of contemporary applications, ensuring that it remains relevant in a fast-paced technological landscape. This adaptability underscores its potential to support a wide range of use cases effectively.

An advanced and cutting-edge message queue and broker, crafted as a lightweight container for smooth operation within Kubernetes, is recognized in the CNCF ecosystem and supports native integration with various cloud-native technologies. This solution is specifically designed for developers, providing a wide range of messaging patterns while guaranteeing scalability, high availability, and strong security measures. It allows for swift connections between microservices through numerous connectors, all without the need for any programming expertise. With intuitive SDKs and the elimination of predefined topics, channels, brokers, and routes, it greatly simplifies the messaging environment. The Build & Deploy feature empowers users to set up KubeMQ components with ease, requiring only a few clicks before deployment via the kubectl command line. Moreover, it ensures rapid deployment within Kubernetes, taking less than a minute, which makes it exceptionally convenient for developers by tackling various issues encountered by them and DevOps teams. Overall, this platform not only streamlines the messaging process but also significantly boosts productivity in cloud-native ecosystems, thereby fostering a more efficient development workflow. As a result, users can focus on building innovative applications rather than getting bogged down by complex messaging configurations.

Anypoint MQ provides advanced asynchronous messaging functionalities, featuring both queuing and publish/subscribe options, via completely managed cloud message queues and exchanges. Serving as a crucial part of Anypoint Platform™, Anypoint MQ accommodates diverse environments and business units, all while employing role-based access control (RBAC) to guarantee high-level security and operational effectiveness for enterprises. This ensures that organizations can efficiently manage their messaging needs while maintaining robust security protocols.

Apache RocketMQ™ is a versatile messaging platform and agile data processing solution, celebrated for its dependable reliability akin to financial standards and its broad usage in essential transaction operations. It seamlessly connects with a variety of ecosystems, such as microservices, real-time analytics, and data lakes. Thanks to its customizable and low-code framework, users can effortlessly link to any system, facilitating the development of streaming ETL workflows, data pipelines, and comprehensive data lakes. This stream processing engine stands out with its lightweight architecture, remarkable scalability, and impressive performance, complemented by a wide array of features. It accommodates various message types and governance approaches, making it particularly suitable for serverless applications that demand precise message load distribution. The user-friendly architecture and considerable business functionality of Apache RocketMQ have contributed to its popularity among enterprise developers and cloud service providers. Its adaptability and simple integration capabilities render it an indispensable asset for contemporary data-centric applications, ensuring that users can effectively manage their data flows in an increasingly complex digital landscape. All these attributes collectively position Apache RocketMQ as a pivotal player in the future of messaging and data processing.