Downloading TesoPost 4.2 from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this software available. TesoPost relates to Photo & Graphics Tools. This free program was originally created by TechniSoft CAD/CAM AG. We recommend checking the downloaded files with any free antivirus.
From the developer:
The generalized postprocessor TesoPost allows you to translate the milling or wire EDM programs of (nearly) all CAD/CAM systems into the format of (nearly) all NC controls.
The TesoPost standard version calculates up to 3½ axis. For simultaneous 5 axis machining the correct selection will be extended TesoPost.
You may want to check out more software, such as AccuTrans 3D, 20-sim Pro or SimbiontC4D v7/v8, which might be related to TesoPost.