CoStone 1.0 could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this software available.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. This program was originally created by EuroSYSTEMS. CoStone is included in Photo & Graphics Tools. The following version: 1.0 is the most frequently downloaded one by the program users. The program's installer is commonly called ec7.exe.
From the developer:
CoStone is a powerful plug-in program with which one can produce hotfix rhinestone transfer templates using a standard cutting plotter. The templates can either be vector cliparts or bitmap patterns, whose contour can be transferred into vectors using CoStone's contour line tool.
You may want to check out more software, such as Iseult, Smart Styles or Repeating Shapes, which might be related to CoStone.