* [Centrifugo v6.7.0](https://github.com/centrifugal/centrifugo) – Scalable real-time messaging server supporting multiple transport protocols for building interactive applications. * [Bifrost v0.47.2](https://github.com/aperturerobotics/bifrost) – Peer-to-peer communications engine with pluggable transports, multiplexing, encryption, meshing, and pub/sub support. * [socket.io socket.io-parser@3.3...](https://github.com/socketio/socket.io) – Realtime application framework for Node.js server enabling bidirectional communication. * [protoo 4.0.8](https://github.com/versatica/protoo) – Minimalist, extensible Node.js signaling framework for multi-party real-time applications. * [Node Slack SDK @slack/socket-mode@2...](https://github.com/slackapi/node-slack-sdk) – Collection of packages for building Slack apps with APIs for notifications, bots, and interactive features.