Shareware
You may, of course, try, keep, copy, and distribute this software. If you use it, then you are expected to register your use with the author. There is no fee for registration. A $20 US fee entitles you to the next available upgrade and future upgrade notices.

Commercial Releases
The commercial version of this software includes a user manual, quick reference card, telephone support, bound book detailing data communications networks optimization, and upgrade notices. Registered users also receive updates to the component database consisting of repeater, multiport repeater, bridge, intelligent hub, wiring center hub, brouter, router, trouter, gateway, packet relay, packet switching, SMDS gateways, and other internetworking components.

Current commercial products:
LANModel® (file and internet functions)                      $79 US plus shipping
LANBuild® (network facility design tool)                     $79 US plus shipping
LANSpecs® (network design tool and database)               Call for price