Downloading NcThumbnails 1.31 from the developer's website was possible 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 most popular version among the software users is 1.3. The actual developer of the free software is MicroTech StellaData. The program lies within Photo & Graphics Tools, more precisely Viewers & Editors.
From the developer:
NcThumbnail is a service that represents all the CNC programs on your computer by a thumbnail (small picture). The program supports both lathe and milling programs. NcThumbnail supports most common CNC formats like Fanuc, Heidenhain and Siemens. It can also be used for other formats that use similar codes. No cycles are currently supported.
You may want to check out more software, such as Simple Slide Show, Flash MX or Batch JPEG Rotator, which might be related to NcThumbnails.