Graphmatica icon Registering Graphmatica

Graphmatica is distributed fully enabled, and you may evaluate it for 30 days for free. After that time, if it is within your means, you are expected to register. Registration entitles you to support, free downloads of patch releases, and notification of new releases by e-mail.


Single-user $25
Site license $60 plus $2.50 per user. For example, a 30-user license costs $60 + 30 x $2.50 for a total of $135.
Student bulk license $2.50 per licensed user (10-249 users)
$2.00 per licensed user (250+ users) Please e-mail me for a custom quote/ordering link.
All prices are in US dollars. Shipping and handling included. Sales tax added for online orders from MN, CO, GA, IA, IL, NE, and UT. CA sales tax added for non-online orders from California.

License terms


Online by electronic payment:

Pre-paid by mail:

I can accept checks or money orders in US dollars ONLY. Please make checks payable to KEITH HERTZER and mail payment along with your registration form (register.txt or register.rtf) to the address found at the bottom of the form (and in readme.txt).

By purchase order:

I am happy to accept purchase orders for transactions over $100. Please send purchase orders to the same address as pre-paid orders, e-mail me a pdf, or fax them at any time to:

(This number is in Massachusetts and may be a toll call.)

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kSoft, Inc. Last updated: Sat 21 August 2021