jquery.impressR.js is a simple plugin that turns any impress.js presentation into a shared, collaborative experience across all connected clients.
By leveraging the jquery.signalRamp.js plugin and the SignalGrr proxy server powered by SignalR for real-time syncing, you can simply drop this plugin atop your impress.js presentation and you've got an instant collaborative presentation across all connected clients.
Click here for the project's homepage.