Download of Tetra GDM 3.5.0 was on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. We recommend checking the downloaded files with any free antivirus. The program's installer file is commonly found as Tetra.exe. The most popular versions of the Tetra GDM 3.5, 3.4 and 3.2. The program is categorized as Education Tools. This software is a product of Scientific Metrics Inc.
From the developer:
Tetra is the only software for evaluation, measurement and decision making that is based on sound mathematical foundations. There are logical and mathematical errors at the foundations of decision theory, game theory, economic theory, psychology, and other social science disciplines. These errors can be avoided by using Tetra. Tetra constructs preference scales using a user’s (or users’) criteria weights and alternatives’ ratings.
You may want to check out more software, such as Tetra Blocks, Tetra Pro Sound Editor or Good Download Manager, which might be related to Tetra GDM.