Extension viewer - Version 1.0.0.28 This program is freeware! Extension viewer is an analysis tool for viewing the programs, extensions and actions stored in the Windows registry. You can view the registry keys grouped by several characteristics: - registered extensions- file types (actions)- OLE keys- applications Extension viewer will help you to see the configuration and the linked file types and actions for each of your applications. You are enabled to check, by which program a file type can be handled. Informative, practical, revealing. Program is in English.