Rigid 3.0 could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this software available.
We cannot guarantee that the program is safe to download as it will be downloaded from the developer's website. Before launching the program, check it with any free antivirus software. This software is a product of Manuel Mu. The most popular version of the tool is 3.0. The most frequent installer filenames for the program are: Rigid.exe and RigidStart.exe etc. Rigid can be installed on 32-bit versions of Windows XP/Vista/7/8/10/11. Rigid is categorized as Photo & Graphics Tools.
From the developer:
This is a software to calculate three-dimensional structures of bars with rigid joints, semi-rigid or pinned. Default bars unions to nodes will be stiff, but the user can modify to your taste the degree of embedment of the same at each end so as to calculate the structure more closely resembles reality.
You may want to check out more software, such as Topaz Impression, RealFlow or RiyazStudio, which might be similar to Rigid.