pubsub

ntfy

+140

Send push notifications to your phone or desktop using PUT/POST

centrifugo

+27

Scalable real-time messaging server in a language-agnostic way. Self-hosted alternative to Pubnub, Pusher, Ably, socket.io, Phoenix.PubSub, SignalR. Set up once and forever.

emqx/emqx

+16

The most scalable and reliable MQTT broker for AI, IoT, IIoT and connected vehicles

dapr/dapr

+11

Dapr is a portable runtime for building distributed applications across cloud and edge, combining event-driven architecture with workflow orchestration.

svix-webhooks

+9

The open source and enterprise-ready webhooks service 🦀

zeromq/libzmq

+10

ZeroMQ core engine in C++, implements ZMTP/3.1

open62541

+6

Open source implementation of OPC UA (OPC Unified Architecture) aka IEC 62541 licensed under Mozilla Public License v2.0

nanomq/nanomq

+6

An ultra-lightweight and blazing-fast Messaging Bus/MQTT Broker for Edge & SDV

iceoryx2

+5

Eclipse iceoryx2™ - true zero-copy inter-process-communication with a Rust core