Startly Technologies, LLC (formerly CE Software) produces InOut Tracker, a cross-platform, TCP/IP-based people tracking utility, based upon the QuickConference instant messaging system.
Servers are available for Windows and "Classic" Mac OS, and clients are available for Windows, "Classic" Mac OS, and Mac OS X. Pricing starts at $59.95 for a 5-user bundle. Downloads are in the form of 30-day demonstration versions.
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