Insfin screen capturing extension
This chrome extension allows you share screen of any opened application, privately, securely between maximum-256 users.
There should be a person who will share his screen; that person is named is "moderator". He'll be given a private-URL pointing to his privately shared tab.
Then moderator can use social networks or email, to share that private URL with his friends. His friends can open the URL and quickly join his "realtime-shared" screen.
Quality of the shared screen is full-HD i.e. 1080p.
Remember, everything is peer-to-peer. Nothing is stored on the server. WebSocket is used only to connect two users at initial handshake. Then WebRTC is used for secure video-only connection.
You can view shared tabs on chrome/firefox/opera both on desktop and android, on all platforms i.e. Windows, Mac and Linux.