IBM Lotus Sametime is IBM's market-leading product and platform for real-time collaboration. It is based on three on demand concepts: - Presence awareness. See, in advance, whether a person(s) or application(s) is available to collaborate, share information and/or take an action. - Instant messaging. Be able to converse virtually through the exchange text-, audio- and/or video-based information in real time. - Web conferencing. Share information, an application or an entire desktop or engage in team white boarding.