NetCheck is a small network utility from the days of the Macintosh
512k. It'll check the (AppleTalk) network status and report any
machines found as well as allow to send messages to any of the
machines on the net. Good to check if your compact Mac network is
really up and running.

See also
[AppleService - NodeCheck][1]

Compatibility
Architecture: 68k

  [1]: http://macintoshgarden.org/apps/apple-service-nodecheck-10