KnotPlot Site License

If you have multiple users in your university or college department, you may want to purchase a KnotPlot Site License. The cost is $160.00 (Canadian dollars) and entitles your entire department access to KnotPlot for academic use. This key enables KnotPlot at Level 1, with many features not available in the evaluation (free) version of KnotPlot. Also, your KnotPlot installation will never expire, unlike the free version.

To purchase a site license, please email me at with the name and address of your department. Then use the button below to make the purchase. Payment is through PayPal and is fast and secure. Most credit cards (Visa, Mastercard, American Express and others) are accepted or you can use a PayPal account if you have one.

After you make your purchase you will be directed to the download page where you can get the installation files for KnotPlot. On rare occasions, this redirection might not work. So, just to be sure you get it, I will email you the location with your license key.

When you make the payment, be sure to specify the same email address you used to send me your department information, to which I will email your site license key.

Thank you for your interest in KnotPlot,
Rob Scharein