Rocket.Chat vs. PubNub

Trusted by the world's most critical organizations, Rocket.Chat Secure CommsOS® is built for high-consequence environments to deliver decision advantage: the ability to work together, verify access continuously, and keep every action auditable across agencies, borders, classification levels, and connected systems. It federates natively across protocols like Matrix and XMPP, so partners never have to adopt your system to work with you. Deploy anywhere — self-hosted, air-gapped, or in a sovereign cloud — for chat, voice, video, and governed AI agents, entirely under your control.

PubNub is a real-time platform for developers who build in-app chat and live features. The Chat SDK includes typing indicators, presence, message history, read receipts, reactions, and threads. PubNub supports unlimited subscribers per channel. PubNub assigns each message a server-side timetoken. Messages on a channel form one ordered sequence. End-to-end delivery latency is sub-100ms. DAZN uses PubNub to power chat and Watch Party experiences for 10 million users. PubNub charges by Monthly Active Users or transactions, depending on the plan.