There is only one file type that uses the .OR2 extension:
Lotus Organizer 2 File
Data file created with Lotus Organizer 2, an early personal information manager (PIM) program; may include a calendar of events, personal notes, a task list, and other information.
Lotus Organizer 2 was included as part of IBM Lotus SmartSuite.
|IBM Lotus Organizer 2 or later|
Updated: August 4, 2009