Windows 10 or 8.1 (64-bit recommended) or macOS (Mojave, Catalina, Big Sur). Processor: Intel Core 2 Duo or AMD Athlon x2. RAM: 4 GB minimum (8 GB recommended). Storage: 1.5 GB available disk space.
Since official trials for the 2021 version are no longer active, you have two primary options: CorelCAD 2021 Free Download
Technical support for perpetual license owners is expected to continue for the "foreseeable future". Recommended Alternatives Windows 10 or 8
You can still trial other Corel products, such as a 15-day trial of CorelDRAW Graphics Suite , though this is for graphic design rather than technical CAD work. CorelCAD 2021 Key Specs (For Reference) CorelCAD 2021 Free Download
Corel (Alludo) has stopped selling CorelCAD and CorelCAD Mobile.