Silo 2.5.60 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available.
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 Mac application is an intellectual property of Nevercenter Ltd. Co. The program relates to Design & Photo Tools.
From the developer:
Silo is a focused 3D modeling application with the ability to effortlessly switch between organically sculpting high-polygon models and precisely controlling hard-edged surfaces. It can be used for anything from creating 3D characters for video games and movies to quickly exploring 3D architectural ideas.
You may want to check out more software for Mac, such as VectorGeddon, which might be similar to Silo.