| File Extension: | WK4 |
| File Type Description: | Lotus Lotus 1-2-3 V4 Worksheet |
| File Type Developer: | IBM |
| Primary Associated Software: | Gnumeric |
| Primary Software Developer: | Open Source |
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Open Source created the Lotus Lotus 1-2-3 V4 Worksheet (WK4) file for the Gnumeric software series. User statistics infer that these WK4 files are popular with users from United States and most frequently found on the Windows 10 platform. Most of these users are running the Google Chrome web browser.
 | Corel Quattro Pro by Corel |
 | Gnumeric by Open Source |
 | Lotus 1-2-3 by IBM |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
 | Mac |
 | Linux |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .ADIUMMESSAGESTYLE | Adam Iser | Settings Files | Adium Message Style Settings |
| .CSIG | Open Source | Developer Files | SCons Content Signature |
| .CETRAINER | Open Source | Game Files | Cheat Engine Trainer File |
| .RB | Larian Studios | Game Files | Divinity: Original Sin Game Data |
| .CB7 | Smith Micro Software | Compressed Files | Comic Book 7-Zip Archive |
| .CGI | Unknown Developer | Executable Files | Common Gateway Interface Script |
| .MUSICXML | Michael Good | Audio Files | Compressed MusicXML File |
| .BED | University of California, Santa Cruz (UCSC) | Data Files | UCSC BED Annotation Track File |
| .SEV | Open Source | Disk Image Files | SevenUp Picture |
| .J01 | Open Source | Backup Files | Akeeba Multi-part Backup Archive |
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