http://www.macnn.com/articles/01/02/08/server.sentinal/
Server Sentinal 2.0: server monitor updated
updated 12:10 pm EST, Thu February 8, 2001
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Intelli Innovations today released Server Sentinel 2.0, a "major" upgrade to its $30 server monitoring and notification application that features a new, rewritten engine for checking server uptime and other service status. Version 2.0 has the ability to create multiple failure and multiple notification events, includes a built-in HTTP and TCP/IP error database for reference, a built-in TCP client for testing, and failure verification. A demo version is available online. [product link added]
