There was a download of GSFileViewer 2.0 on 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. The GSFileViewer installer is commonly called GSFileViewer.exe. The most popular versions among GSFileViewer users are 2.0 and 1.9. The actual developer of the free software is Liechti. GSFileViewer belongs to Multimedia Tools.
From the developer:
GSFileViewer is a free software tool developed In C# for viewing and chaning .GS archive file content. This software allows you to open a gs file , extract the whole gs file to a folder and save the output very fast and easy, it has a friendly user interface and it is a small utility
You may want to check out more software, such as CDMaster32, DVD to iPod Converter or Dvd95Copy, which might be related to GSFileViewer.