Socket.io - Realtime application framework (Node.JS server)
MoneyMade - Discover and compare investment opportunities
Ably - Serious realtime infrastructure
Worth it - Keeping track of your money, the simple way
Pusher - Pusher is a hosted API for quickly, easily and securely adding scalable realtime functionality via WebSockets to web and mobile apps.
Exirio - Track all your wealth, in one place