: Since early 2022, PTC no longer sells or distributes Mathcad 15 or versions of Mathcad Prime earlier than Prime 7.
PTC Mathcad 15 is no longer available for new subscriptions or direct official download for new users. As of , PTC reached an "End-of-Sale" status for Mathcad 15 due to the expiration of rights for a third-party component. Official Status and Availability ptc mathcad 15 download
: Windows 7 (32/64-bit), Windows 8.1, or Windows 10 (specifically M050). Windows 11 is not officially supported for this legacy version. : Since early 2022, PTC no longer sells