PubNub
Real-time communication platform powering chat, live updates, and in-app interactivity with sub-30ms global delivery and SDKs for 15+ languages.
About
PubNub is a real-time communication platform headquartered in San Francisco, with offices in London and Katowice, Poland. Founded in 2010, the company operates one of the world's largest pub/sub networks, providing ultra-low-latency APIs for chat, live updates, presence, push notifications, geolocation, and IoT device control.
PubNub has raised over $130M from investors including The Raine Group, Sapphire, Scale, Relay, Cisco, Bosch, and Ericsson. Notable customers include Amazon, RingCentral, Verizon, Autodesk, Zillow, and Dropbox.
The platform provides SDKs for JavaScript, Java, Kotlin, Swift, Python, Go, Rust, Ruby, C, .NET, Dart, PHP, plus Unity and Unreal Engine integrations. The company also offers an MCP Server for AI-native development.