PubNub - PubNub is a real-time messaging system for web and mobile apps that can handle API for all platforms and push messages to any device anywhere in the world in a fraction of a second without having to worry about proxies, firewalls or mobile drop-offs.

Thinstation - Thinstation is a basic and small, yet very powerful, open source thin client operating system...

Ably - Serious realtime infrastructure

DRBL - DRBL (Diskless Remote Boot in Linux) is a free software, open source solution to managing the...

Pusher - Pusher is a hosted API for quickly, easily and securely adding scalable realtime functionality via WebSockets to web and mobile apps.

LTSP - The Linux Terminal Server Project adds thin-client support to Linux servers.