Commercial license is aimed for usage in companies. It enables the company to use the program on a limited number of computers. E.g. if you purchase 5 licenses you can use the program on 5 computers of your company. Also we have volume discounts so as more licenses you purchase as less one single license costs. Click this link to show volume discounts.
The license purchase will entitle you to free upgrades for one year from the purchase date. If you wish to get upgrades of the program after your initial one year upgrade period you need to pay only $9.90 USD to extend your subscription for upgrades for additional one year.

Unlimited license is aimed for business usage. It allows the company to use the program on all its computers not depending on their number! This unique license type will let your company not to spend money when you add new working places.
The license purchase will entitle you to free upgrades for one year from the purchase date. If you wish to get upgrades of the program after your initial one year upgrade period you need to pay only $99.90 USD to extend your subscription for upgrades for additional one year.