| File Extension: | OR4 |
| File Type Description: | IBM Lotus Organizer 97 GS File |
| File Type Developer: | IBM |
| Primary Associated Software: | IBM Lotus Forms Viewer |
| Primary Software Developer: | IBM |
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IBM Lotus Organizer 97 GS File files are the most popular type of files to carry the OR4 file extension, originally developed by IBM for IBM Lotus Forms Viewer. Data from our web servers (annonymous users) show that OR4 files are most popular in United States and are often used by Windows 10. Most of these users are running the Google Chrome web browser.
 | IBM Lotus Forms Viewer by IBM |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .MSG | Microsoft Corporation | Text Files | Saved Email Message |
| .SPP | Serif | Raster Image Files | Serif PhotoPlus Picture File |
| .M4C | IBM | Data Files | IBM Voice Type Languages Newuser File |
| .BFF | IBM | Backup Files | Backup File Format |
| .PPR | IBM | Data Files | Cognos PowerPlay Report File |
| .ADX | CRI Middleware | Audio Files | ADX Audio File |
| .MDX | Disc Soft Ltd. | Disk Image Files | Extended Media Descriptor File |
| .AIO | IBM | Developer Files | APL Transfer Format File |
| .IL | Microsoft Corporation | Uncommon Files | MSIL Assembler Input File |
| .EAR | Oracle Corporation | Executable Files | Java Enterprise Archive File |
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*Files that are not supported can be opened in binary format.
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