WhatsApp, RealVNC Connect, UltraViewer, UltraVNC, Apache Guacamole, TightVNC, Skype, TigerVNC, NoMachine, BigBlueButton, Big Blue Meeting, RD Tabs, WebinarJam, Briefing, ScreenStream, Groupworld, OpenNX, Quick Screen Share, ShorterBetterMeetings.com, CrankWheel, ClientBee are some alternatives to Net Meeting.