ZeroMQ Alternatives (September 2025)

A flexible messaging platform that enables real-time integration and connects the Internet of Things (IoT).

Kubernetes message broker and message queue platform. An open-source project providing the most efficient way to connect microservices.

DevOps serverless application tools to run background tasks with Docker containers and manage messaging queues with cloud elasticity and no vendor lock-in

A high performance, open source universal RPC …

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Build powerful reactive, concurrent, and distributed applications in Java and Scala

Apache Kafka: A Distributed Streaming Platform.

OpenStack is an open source cloud computing infrastructure software project and is one of the three most active open source projects in the world.

A cross-language development platform for in-memory analytics

Open source Python framework for rapid development of applications that make use of innovative user interfaces, such as multi-touch apps.

IBM MQ is a family of middleware products for point-to-point and publish-subscribe messaging. MQ is available as as SaaS on IBM Cloud, as a hardware appliance, and for self-hosting, including on z/OS.

OpenCV provides a real-time optimized Computer Vision library, tools, and hardware. It also supports model execution for Machine Learning (ML) and Artificial Intelligence (AI).

EMQX: The most scalable MQTT Broker for IoT. Connect 100M+ IoT devices in 1 cluster at 1ms latency. Move and process millions of MQTT messages per second.

Build invincible apps with Temporal's open-source durable execution platform to guarantee successful execution, even in the presence of failures.

Open-Source, Full-Stack Microservice Solution.With out of the box, high performance, compatible with popular ecology, multi-language support Get started

Apache Mesos abstracts resources away from machines, enabling fault-tolerant and elastic distributed systems to easily be built and run effectively.

The Gleam programming language

Redpanda is a powerful, simple, and cost-efficient streaming data platform that is compatible with Kafka® APIs while eliminating Kafka complexity.

.NET is a free, cross-platform, open-source developer platform. .NET has languages, editors, and libraries to build for web, mobile, desktop, games, and IoT.

Apex is an enterprise grade native YARN big data-in-motion platform that unifies stream processing as well as batch processing.

Experience the power of Large Language Models like never before! Unleash the full potential of Natural Language Processing with Spark NLP, the open-source library that delivers scalable LLMs

memcached

ZEDEDA delivers an open, distributed, cloud-native edge management and orchestration solution.

Software operations are easier with Juju - the open source orchestration engine for software operators. Deploy, integrate, scale and manage your applications' lifecycle at any scale, on any infrastructure with Juju and charms.

OpenFOAM is the leading free, open source software for computational fluid dynamics (CFD), owned by the OpenFOAM Foundation and distributed exclusively open source under the General Public...

Push is the missing piece of Web3 | Push Protocol is a web3 communication network, enabling cross-chain notifications and messaging for dapps, wallets, and services.

Get the world's best supported build of OpenJDK with Azul. See how Azul Platform Core can help you deliver secure & stable Java with 90% lower licensing costs.

Hystrix is a latency and fault tolerance library designed to isolate points of access to remote systems, services and 3rd party libraries, stop cascading failure and enable resilience in complex distributed systems where failure is inevitable. - Netflix/Hystrix

JavaScript Charts in one powerful declarative library. Simple for developers.

NCache is an extremely fast and scalable Open Source In-Memory Distributed Cache for .NET and Java that caches app data and stores Web Sessions in multi-server environments.

Nomad is a highly available, distributed, data-center aware cluster and application scheduler designed to support the modern datacenter with support for long-running services, batch jobs, and much more.

An open source Kubernetes Platform to manage enterprise-grade Kubernetes across hybrid cloud, multi-cloud and edge. Get started for free!

Browse our developer-first, open source application delivery & hosting platform. Discover unmatched flexibility, up to 99.99% uptime, & exceptional support

Why NumPy? Powerful n-dimensional arrays. Numerical computing tools. Interoperable. Performant. Open source.

The Microsoft Build of OpenJDK is a new no-cost long-term supported distribution and Microsoft’s new way to collaborate and contribute to the Java ecosystem.

An industry-standard container runtime with an emphasis on simplicity, robustness, and portability

An open-source Backend-as-a-Service stack for web & mobile applications, based on RESTful APIs.

SNMP .NET Component Download - SnmpSource offers users a comprehensive toolkit for quick development.

Apache Beam is an open source, unified model and set of language-specific SDKs for defining and executing data processing workflows, and also data ingestion and integration flows, supporting Enterprise Integration Patterns (EIPs) and Domain Specific Languages (DSLs). Dataflow pipelines simplify the mechanics of large-scale batch and streaming data processing and can run on a number of runtimes like Apache Flink, Apache Spark, and Google Cloud Dataflow (a cloud service). Beam also brings DSL in different languages, allowing users to easily implement their data integration processes.

Production-Grade Container Orchestration

Apache ServiceMix - An open-source integration container

Apache Object Oriented Data Technology (OODT) is the smart way to integrate and archive your processes, your data, and its metadata. It facilitates the generation, processing, management, distribution, analysis of data management, data archiving, and data analytics systems allowing for the integration of data, computation, visualization and other components.

SapMachine : The OpenJDK release maintained and supported by SAP

Consul is a multi-cloud service networking platform to connect and secure services across any runtime platform and public or private cloud.

Simple, resilient multi-host containers networking and more. - weaveworks/weave

Godot provides a huge set of common tools, so you can just focus on making your game without reinventing the wheel.

Ingest events into Pub/Sub to stream to BigQuery, data lakes and databases; messaging middleware for streaming analytics and service integrations

Amazon SNS is a managed messaging service for communication, allowing messaging between decoupled microservices applications or directly to users with SMS texts, mobile push, and email.

DHTMLX UI libraries are pure JavaScript/HTML5 client-side widgets for high-speed web and mobile development. They are easily customizable and configurable via API.

AnyChart JS Charts is an award-winning JavaScript charting library with great API, docs & support. Easy data visualization for any web, desktop & mobile apps.

Open source desktop application that provides Kubernetes, Container Management, bundled utilities on the desktop

FileZilla - The free FTP solution for both client and server. Filezilla is open source software distributed free of charge.

SmartEngage offers Cross-Channel Marketing Automation and Broadcast for Email Newsletter, SMS, Facebook Chat Bot, and Push Notifications.

Novu empowers developers and product teams to collaborate seamlessly on notification management. Its unified platform provides centralized content, type-safe schemas, and reusable components, facilitating efficient workflows. With code-first and no-code tools, teams can easily customize and deploy notifications across multiple channels like email, SMS, push, chat, and in-app. Novu enhances communication, reduces friction, and ensures reliable, scalable, and personalized user experiences while maintaining full visibility and control over notifications.

Apache TomEE is a lightweight, yet powerful, JavaEE Application server with feature rich tooling.

Keep connected with Azure Service Bus, a cloud messaging system for connecting apps and devices across public and private clouds.

Receive highly-available, low-latency publish-subscribe (pub-sub) notifications to Oracle Functions, email, SMS, and partner endpoints, including Slack, PagerDuty, and ServiceNow.

The Eclipse Foundation provides our global community of individuals and organisations with a mature, scalable, and business-friendly environment for open source …

Apache CloudStack is an opensource infrastructure-as-a-service cloud computing platform that is easy to use, turnkey, highly available and highly scalable.

The Eclipse Foundation provides our global community of individuals and organisations with a mature, scalable, and business-friendly environment for open source …

Empower your digital transformation securely with InstaSafe's Zero Trust solutions. Enhance access control, privacy, and simplify deployment for a seamless user experience.

SCons: A software construction tool

Semantic empowers designers and developers by creating a shared vocabulary for UI.

Check out Quiq's AI-powered conversational CX and business messaging platform. Schedule a live demo or contact us today.

Our API Management platform is fast, scalable, modern. Including an open source API Gateway, Analytics, Dev Portal and Dashboard.

Spectrm helps consumer marketers grow revenue on messaging channels using zero party data and conversational marketing automation.

FreeRTOS is an open source, real-time operating system for microcontrollers and microprocessors that makes small, low-power devices easier to program, deploy, and secure.

Amazon MQ is a managed message broker service for Apache ActiveMQ and RabbitMQ that simplifies setup and operation of open-source message brokers on AWS.

TrueNAS is the World's #1 Open Source Storage. Based on OpenZFS, it is trusted by millions and deployed worldwide.

Discover the TIBCO® Platform––Messaging for seamless, real-time data distribution across your enterprise. Our platform offers diverse messaging components like TIBCO Enterprise Message Service™, TIBCO® Messaging Quasar, and more, ensuring high-performance, secure, and reliable data exchange for complex IT environments. Explore our solutions tailored for cloud integration, IoT, and event-driven architectures

Webiny is an open source serverless CMS that offers you all the enterprise-grade functionalities, while keeping your data within the security perimeter of your own infrastructure

A service mesh for observability, security in depth, and management that speeds deployment cycles.

Zeropark is a commerce media platform providing incremental advertising solutions for brands and efficient monetization opportunities for publishers.

The Oracle Berkeley DB family of open source, embeddable databases provides developers with fast, reliable, local persistence with zero administration. Often deployed as an 'edge' database, Oracle Berkeley DB provides very high performance, reliability, scalability, and availability for application use cases that do not require SQL

dotCMS is a powerful universal content management system (uCMS) that enables a unified editor experience regardless of delivery. Easily create, manage, and edit web pages in a powerful, user-friendly interface while developers can build in their favorite frameworks.

BTCPay Server is a self-hosted, open-source cryptocurrency payment processor. It's secure, private, censorship-resistant and free.

Pulumi's open source infrastructure as code SDK enables you to create, deploy, and manage infrastructure on any cloud, using your favorite languages.

ZeroTier is the best global networking solution and overlay for IoT infrastructure, SD-WAN, VPN, and remote access.

Flutter transforms the entire app development process. Build, test, and deploy beautiful mobile, web, desktop, and embedded apps from a single codebase.

Enterprise Communications Platform as a Service (CPaaS)

GnuPG is a free implementation of OpenPGP

Inbox Zero is your AI personal assistant for email and the quickest way to reach inbox zero. Automate your email, bulk unsubscribe from newsletters, block cold emails, and view your email analytics. Open-source.

Microsoft SEAL is an easy-to-use and powerful open-source homomorphic encryption library that enables running computations directly on encrypted data.

Mitigate network level access and deliver granular application access based on identity and context.

The most popular open source content collaboration platform for tens of millions of users at thousands of organizations across the globe

Courier is a notification API built for developers. Design once, and deliver to any channel – email, Slack, SMS, push, and more – all through a single API.

A curated framework of Open Source Platform components to accelerate the development of Smart Solutions.

Power everything from live chat to data broadcast - reliably, securely, and at serious scale with Ably. The largest WebSocket-based pub/sub platform.

Simple yet flexible JavaScript charting library for the modern web

Graphcool has sunsetted on July 1st, 2020

Easily unify the management, security, and governance of both synchronous and asynchronous ecosystems with the leading open source API Management platform.

Building the most powerful tools for distributed networks.

​​Multi-channel marketing automation platform with email, web push, SMS, and chatbots for Facebook, Telegram, WhatsApp, and Instagram — all combined in a free CRM.

libGDX is a cross-platform Java game development framework based on OpenGL (ES) that works on Windows, Linux, macOS, Android, your browser and iOS.

Apache NiFi is an easy to use, powerful, and reliable system to process and distribute data

Check Frequently Asked Questions for SureMDM, Mobile Device Management Solution at 42Gears.com

Zulip is an organized team chat app, designed for efficient communication.

UniDAC provides a direct connection to various databases using Components for Delphi, C++Builder, Lazarus on Windows, macOS, Linux, iOS, Android. Free 60-day trial!

Accelerate application development with 100% serverless GraphQL and Pub/Sub APIs. Get 250,000 API requests free per month for 12 months.