| File Extension: | WJ3 |
| File Type Description: | Lotus 1-2-3 Worksheet File |
| File Type Developer: | IBM |
| Primary Associated Software: | Lotus 1-2-3 |
| Primary Software Developer: | IBM |
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IBM developed the Lotus 1-2-3 Worksheet File file type when the Lotus 1-2-3 was initially released. According to our internal data, Lotus 1-2-3 Worksheet File files are most popular with users in Japan, with a majority of them running Windows 10. Frequently these users are visiting our web site using Google Chrome.
 | Lotus 1-2-3 by IBM |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
 | Mac |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .WG1 | IBM | Spreadsheet Files | Lotus 1-2-3 Worksheet File |
| .CLX | IBM | Data Files | Rational XDE |
| .MDC | IBM | Data Files | Multi Dimension Cube File |
| .RIP | IBM | Data Files | Lotus Notes Error File |
| .OR4 | IBM | Data Files | IBM Lotus Organizer 97 GS File |
| .U2P | IBM | Developer Files | Telelogic Tau UML Program Text File |
| .MAR | Microsoft Corporation | Database Files | Microsoft Access Report |
| .FCC | Netegrity | Settings Files | Forms Credential Collector File |
| .1DK | IBM | Backup Files | OS/2 Saved SKF Format |
| .CLO | Pierre-Emmanuel Gougelet | Graphic Files | Cloe Ray-Tracer Image |
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