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Repositories in this selection 42 · UTC 2026-11-04
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1—Ppermissionlesstech / bitchatbluetooth mesh chat, IRC vibesSwiftUnlicense · PermissiveInsufficient rank history37,0625,891——2026-11-01
2—Nnsqio / nsqA realtime distributed messaging platformGoMIT · PermissiveInsufficient rank history25,7732,881——2026-08-11
3—Aapache / rocketmqApache RocketMQ is a cloud native messaging and streaming platform, making it simple to build event-driven applications.JavaApache-2.0 · PermissiveInsufficient rank history22,64912,037——2026-10-27
4—Nnats-io / nats-serverHigh-Performance server for NATS.io, the cloud and edge native messaging system.GoApache-2.0 · PermissiveInsufficient rank history20,9902,027——2026-11-03
5—Ssimplex-chat / simplex-chatAuthor description: SimpleX - the first messaging network operating without user identifiers of any kind - 100% private by design! iOS, Android and desktop apps 📱!HaskellAGPL-3.0 · Share derivative sourceInsufficient rank history19,6311,318——2026-11-02
6—Eemqx / emqxThe most scalable and reliable MQTT broker for AI, IoT, IIoT and connected vehiclesErlangNOASSERTION · Restricted / unknownInsufficient rank history16,8782,577——2026-11-03
7—Oopenimsdk / open-im-serverIM Chat OpenClawGoApache-2.0 · PermissiveInsufficient rank history16,7472,977——2026-10-30
8—Aapache / pulsarApache Pulsar - distributed pub-sub messaging systemJavaApache-2.0 · PermissiveInsufficient rank history15,3513,781——2026-11-03
9—Rrabbitmq / rabbitmq-serverOpen source RabbitMQ: core server and tier 1 (built-in) pluginsJavaScriptNOASSERTION · Restricted / unknownInsufficient rank history13,9534,031——2026-11-03
10—Ttinode / chatInstant messaging platform. Backend in Go. Clients: Swift iOS, Java Android, JS webapp, scriptable command line; chatbotsGoGPL-3.0 · Share derivative sourceInsufficient rank history13,5482,093——2026-10-25
11—Eeclipse-mosquitto / mosquittoEclipse Mosquitto - An open source MQTT brokerCNOASSERTION · Restricted / unknownInsufficient rank history11,3262,660——2026-10-15
12—Zzeromq / libzmqZeroMQ core engine in C++, implements ZMTP/3.1C++MPL-2.0 · Share derivative sourceInsufficient rank history11,0502,496——2026-10-18
13—Ccentrifugal / centrifugoScalable 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.GoApache-2.0 · PermissiveInsufficient rank history10,944751——2026-11-03
14—Bberty / bertyBerty is a secure peer-to-peer messaging app that works with or without internet access, cellular data or trust in the networkTypeScriptNOASSERTION · Restricted / unknownInsufficient rank history9,343513——2026-11-01
15—Aaeron-io / aeronEfficient reliable UDP unicast, UDP multicast, and IPC message transportJavaApache-2.0 · PermissiveInsufficient rank history8,9451,117——2026-11-03
16—MMassTransit / MassTransitDistributed Application Framework for .NETC#Apache-2.0 · PermissiveInsufficient rank history7,8131,970——2026-10-21
17—Pprocessone / ejabberdRobust, Ubiquitous and Massively Scalable Messaging Platform (XMPP, MQTT, SIP Server)ErlangNOASSERTION · Restricted / unknownInsufficient rank history6,7501,553——2026-11-02
18—MMessageKit / MessageKitA community-driven replacement for JSQMessagesViewControllerSwiftMIT · PermissiveInsufficient rank history6,2711,191——2026-11-01
19—Mmacro-inc / macroMacro is a unified workspace for teams: email, chat, docs, tasks, agents, calls, and CRM — @-linked together with shared AI memory.RustAGPL-3.0 · Share derivative sourceInsufficient rank history6,079565——2026-11-02
20—Sstrimzi / strimzi-kafka-operatorApache Kafka® running on KubernetesJavaApache-2.0 · PermissiveInsufficient rank history5,9661,565——2026-11-03
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