In general, each machine running your custom application needs a NumXL license, and you many run multiple applications on that machine using the same license key.
To acquire a NumXL license, you or your customer should go to our website (www.spiderfinancial.com) and place an order for a number of NumXL licenses that match your deployment environment (i.e. machines). Spider Financial offers different subsciption terms and discount programs. For more details, please visit our pricing page online .
For server applications with more than 20 concurrent users, please contact us for pricing.