Microsoft PowerPoint uses the PowerPoint Presentation
(ppt) file format
Microsoft Publisher
Microsoft Visio
Microsoft Outlook uses multiple file formats for different purposes
the Personal Folder File (PAB, PST, OST)
format to store e-mails, appointments, tasks, notes, contacts, etc. The
PFF format changed from a 32-bit to a 64-bit version in Outlook 2003.
the Nickfile (nk2) format to store
e-mail address aliases
Microsoft Access uses a file format based on Microsoft Joint Engine
Technology (JET)
Microsoft Office 2007
Uses the ZIP archive file format for most
of the file formats