You could have downloaded PlineTools 1.1 from our software library for free. This program was originally designed by DeliCAD.com. The program is included in Photo & Graphics Tools. The most popular version among the program users is 1.1.
From the developer:
PLineTools is a set of more than 40 tools allowing easy edition, modification and creation of 2D or 3D polylines.
You may want to check out more software, such as 3D Studio VIZ R3, P-CAD 2004 Viewer or Baldor Electronic Catalog, which might be similar to PlineTools.