You can download the demo version from this page.
The demo version is free. Its purpose is to let you familiarize yourself with Windows-Doors, and see how it suits your needs. Please note that this version is limited in time. If your demo version has stopped working, it means that it expired; in that case, please visit this page again and download the latest demo version.
The demo version does not let you configure it or edit data, and you cannot add your profile systems, components, prices, etc.
If you want to customize Windows-Doors, please use the trial version, or the full version. For more information about configuring the application, please read the documentation.
Note: if You use non-metric measurement system - please choice an Feet/inches in File menu -> Settings -> Language - Measurement system