From OS2World.com Wiki
The .INF files on OS/2 and eComStation are the viewable files of the Information Presentation Facility (IPF). This are the help files and documentation books.
- VIEW.EXE - OS/2 - This program is the one included on OS/2
- NewView]] - OS/2 - Open source program alternative to view INF files.
- iView - Windows 16 bits / XP - Viewer for Windows 
- DocView from fpGUI Toolkit - Viewer for Win32