Send push notifications to your phone or desktop using PUT/POST
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Dec 17, 2025 - Go
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Publish-subscribe pattern
The publish-subscribe pattern (short: pubsub) is an event handling and messaging pattern where the consumer subscribes to the provider, which in return can then publish a message that can be picked up and processed by each subscribed consumer.
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Dapr is a portable runtime for building distributed applications across cloud and edge, combining event-driven architecture with workflow orchestration.
kubernetes microservices state-management microservice serverless containers pubsub event-driven sidecar
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Dec 19, 2025 - Go
Simple, secure & standards compliant web server for the most demanding of applications
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The most scalable and reliable MQTT broker for AI, IoT, IIoT and connected vehicles
mqtt iot coap m2m erlang messaging pubsub message-queue mqtt-broker iot-middleware broker manufacturing iiot mqtt-server lwm2m lorawan mqtt-protocol aiot emqx industry-40
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Dec 19, 2025 - Erlang
🥊 Tiny 200 byte functional event emitter / pubsub.
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Aug 14, 2024 - TypeScript
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.
redis alternative pusher streaming real-time websocket messaging websockets socket-io scalability grpc pubsub sse server-sent-events http-streaming pubnub eventsource ably http3 webtransport
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Dec 17, 2025 - Go
μWebSockets for Node.js back-ends 🤘
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Nov 28, 2025 - C++
Broadcast, Presence, and Postgres Changes via WebSockets
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Dec 19, 2025 - Elixir
deepstream.io server
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Aug 3, 2025 - TypeScript
Highly scalable realtime pub/sub and RPC framework
nodejs javascript docker kubernetes framework scalable websocket websockets realtime pubsub socketcluster
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Nov 19, 2025 - JavaScript
Policy and data administration, distribution, and real-time updates on top of Policy Agents (OPA, Cedar, ...)
microservices websocket realtime pubsub policy authorization opa opal hacktoberfest cedar open-policy-agent policy-as-code openfga
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Dec 16, 2025 - Python
High performance, distributed and low latency publish-subscribe platform.
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Mar 13, 2025 - Go
A Microservice Toolkit from The New York Times
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Jul 13, 2023 - Go
A distributed MQTT message broker based on Erlang/OTP. Built for high quality & Industrial use cases. The VerneMQ mission is active & the project maintained. Thank you for your support!
mqtt iot m2m erlang scalable messaging pubsub distributed message-queue iot-middleware broker manufacturing industrial-automation vernemq industrial-communication industrial-iot industry-40 vernemq-users vernemq-documentation
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Dec 15, 2025 - Erlang
A micro library providing Ruby objects with Publish-Subscribe capabilities
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Aug 15, 2024 - Ruby
The open source and enterprise-ready webhooks service 🦀
api rust redis webhooks kafka stream queue rabbitmq webhook background-jobs pubsub message-queue event-driven hacktoberfest background-tasks webhook-server webhook-service webhooks-server webhook-dispatcher webhook-ingester
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Dec 18, 2025 - Rust
Released 1987
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