* [Centrifugo v6.8.0](https://github.com/centrifugal/centrifugo) – Scalable real-time messaging server supporting multiple transport protocols for building interactive applications.

* [NATS Server v2.14.2](https://github.com/nats-io/nats-server) – High-performance messaging server for cloud-native applications and distributed systems.

* [HAVEN v3.21.0](https://github.com/ancsemi/Haven) – Self-hosted private chat server that runs on your machine, offering voice, channels, invite codes, and file sharing.

* [RabbitMQ v4.2.7](https://github.com/rabbitmq/rabbitmq-server) – Feature-rich multi-protocol messaging and streaming broker supporting various protocols.

* [Harper v5.0.19](https://github.com/HarperFast/harper) – Node.js unified in-memory platform combining database, cache, application logic, and messaging for microsecond-level performance.

* [WAHA TUI v1.6.2](https://github.com/muhammedaksam/waha-tui) – Terminal-based WhatsApp client using WAHA, offering session management, chat browsing, and real-time messaging via an OpenTUI interface.

* [Ethora SDK Monorepo v26.06](https://github.com/dappros/ethora) – Chat, AI, and messaging SDK platform to add real-time messaging, AI bots, wallets, and backend services to apps.

* [Sharkord v0.0.22](https://github.com/Sharkord/sharkord) – Lightweight self-hosted real-time communication platform providing voice, video, text, and file sharing with full data control.