CYCAS 3.90.4 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The most popular versions among CYCAS users are 3.9 and 2.1. Cycas.exe is the most common filename for this program's installer.
The program belongs to Photo & Graphics Tools. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. This program is a product of Verlag Frese.
From the developer:
CYCAS is a piece of architectural software for drafting and design in 2 + 3 dimensions.
In addition to typical CAD functions, CYCAS offers special elements and techniques for architectural design. Therefore, you can easily design and draft your ideas.
You may want to check out more software, such as Riptide, 3D Studio VIZ R3 or P-CAD 2004 Viewer, which might be related to CYCAS.