| O |
Object file (Unix) |
| O |
Object file (Atari) |
| O |
Object file (GCC) |
| OAS |
Word processor
document (Fujitsu OAS)(Japanese) |
| OAZ |
Fax (NetFax Manager) |
| OB |
Object cut/paste
file (IBM LinkWay) |
| OBD |
Binder template
(Microsoft Office) |
| OBD |
Binder (Microsoft
Office) |
| OBJ |
Object file |
| OBR |
Object browser
data file (Borland C++) |
| OBS |
Script (ObjectScript) |
| OBV |
Visual interface
(ObjectScript) |
| OBZ |
Binder Wizard
(Microsoft Office) |
| OCF |
Object craft file
(Object Craft) |
| OCR |
Transcribed fax-to-text
file (FAXGrabber) |
| OLE |
Object Linking
and Embedding (OLE) custom control (Microsoft) |
| ODL |
Type library source
(Visual C++) |
| ODS |
Mailbox file (Microsoft
Outlook Express) |
| OFD |
Form definition
(ObjectView) |
| OFF |
Object File (3D
Mesh) |
| OFN |
FileNew file (Microsoft
Office) |
| OFT |
Template (Microsoft
Outlook) |
| OKR |
Feldeinteilung
module file (3-D Fassade Plus) |
| OKT |
Music module (MOD)
(Oktalyzer) |
| OLB |
Object Library
(OLE) (Microsoft) |
| OLB |
Object library
(VAX) |
| OLD |
Backup file (Generic) |
| OLE |
OLE object |
| OLI |
Text file (Olivetti) |
| OO1 |
Voice file (Typhoon) |
| OOGL |
Object Oriented
Graphics Library |
| OOM |
Swap file (Shroom) |
| OPJ |
Project file (Orcad
Schematic Capture) |
| OPL |
Organiser Programming
Language source file (Psion/Symbian) |
| OPN |
Active options
(Exact) |
| OPO |
Output executable
file (OPL) |
| OPT |
Developer Studio
file (Microsoft) |
| OPT |
Optimize support
file (QEMM) |
| OPW |
Organization chart
(Org Plus for Windows) |
| OPX |
Extension DLL
(OPL) |
| OPX |
Inactive options
(Exact) |
| ORA |
Parameter file
(Oracle) |
| ORC |
Script (Oracle
7) |
| ORG |
Calendar file
(Lotus Organizer) |
| OR2 |
Calendar file
(Lotus Organizer 2) |
| OR3 |
Lotus Organizer
97 file |
| ORA |
Configuration
file (Oracle 7) |
| OSS |
Search file (Microsoft
Office) |
| OST |
Offline file (Microsoft
Exchange/Outlook) |
| OTL |
Outline font description
(Z-Soft Type Foundry) |
| OTL |
Template file
(Super NoteTab) (Fookes) |
| OTL |
Template file
(PrintMaster Gold) |
| OTX |
Text file (Olivetti
Olitext Plus) |
| OUT |
Output file (Microsoft
C) |
| OV |
Database file
(Revelation-DOS) |
| OV1 |
Overlay file |
| OV2 |
Overlay file |
| OVD |
Datafile (ObjectVision) |
| OVL |
Overlay file |
| OVR |
Overlay file |
| O$$ |
Outfile (Sprint) |
COOL
INFO