Our website provides a free download of STOS 1.04. This software is a product of Ty Harness Consulting. This PC program is suitable for 32-bit versions of Windows XP/7. SquareTOSquare.exe is the frequent file name to indicate the STOS installer. STOS lies within Photo & Graphics Tools, more precisely 3D Design. The most popular version of the program is 1.0.
From the developer:
The square-to-square frustum is probably the most common sheet metal transformation. There are many applications: boxes, trays, moulds, hoppers, skips,etc. Trays and skips are very often tapered to allow for stacking and moulds for concrete lintels or fence posts are all slightly tapered to aid release. If you're in the welding and fabrication industry then you've, probably already, made a 1000 hoppers because they are used absolutely everywhere.
You may want to check out more software, such as gljakal's ToDo, Star Trek Online or Aiseesoft iPhone 4S to Computer Transfer Ultimate, which might be related to STOS.