Downloading iWitness 1.4 from our website was free. The program's installer is commonly called iWitness.exe. The most popular versions of the tool 2.0 and 1.4. The program is included in Photo & Graphics Tools. This tool was originally developed by Photometrix Pty Ltd.
From the developer:
iWitness is the most robust and user-friendly close-range photogrammetry software available for creating three-dimensional measurements from photographic images. A complete measurement system for 3D scene reconstruction now needs only a consumer-grade digital camera, a PC and the powerful, inexpensive iWitness software.
You may want to check out more software, such as Win4D Advance or PlaneView, which might be related to iWitness.