ZWCAD licences are perpetual licences. There are no compulsory annual charges. Users can either upgrade as they need or have a low cost maintenance option that will give them all the upgrades that are released during the term, as well as an additional home use licence of the software.
As standard, software is on a portable software lock, but can be changed to a dongle version if required for an additional £99+vat.
For five or more licences, there is the option for a network version at no extra cost with the initial purchase. If you would like a network version with less than five concurrent licences, that is available for an uplift of £50 per seat.