.OR4 File Extension
IBM Lotus Organizer 97 GS File
2.3 | 3 Votes
What is an OR4 file?
Organizer file created with Lotus Organizer, a personal information manager (PIM) software program; includes a contact list, calendar, to-do list, call record, and other information.
Lotus Organizer 97 GS was included as part of IBM Lotus SmartSuite 97 GS.
Programs that open OR4 files
IBM Lotus Organizer 97 GS or later