The description of Stream Viewer - Play With New Friends
Windows NT4, 200, XP, and 2003,when installed with the NTFS file system, supportthe creation of hidden "alternate data stream"files, but Windows Explorer cannot see them.Stream Viewer adds a new tab to file Propertieswindows, allowing you to see and optionally delete hiddenADS files, which may pose a security risk andcan be used to hide "malicious" files on a PC.