| File Extension: | WK! |
| File Type Description: | Lotus 1-2-3 Spreadsheet |
| File Type Developer: | IBM |
| Primary Associated Software: | Apache OpenOffice |
| Primary Software Developer: | Apache Software Foundation |
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Release of the Gnumeric software program prompted the development of the Lotus 1-2-3 Spreadsheet file type by Open Source. Our internal web tracking data indicates that Windows 10 operating system users, and those living in United States, are the most likely to use Lotus 1-2-3 Spreadsheet files. A vast majority of these users are opting to use Google Chrome as their preferred internet browser.
![]() | Apache OpenOffice by Apache Software Foundation |
![]() | Lotus 1-2-3 by IBM |
![]() | Gnumeric by Open Source |
![]() | NeoOffice by Planamesa Software Inc. |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .WR! | IBM | Spreadsheet Files | Lotus 1-2-3 Spreadsheet |
| .123 | IBM | Spreadsheet Files | Lotus 1-2-3 Spreadsheet |
| .SOB | Apache Software Foundation | Raster Image Files | OpenOffice.org Impress Bimap Styles File |
| .SOG | Apache Software Foundation | Data Files | Apache OpenOffice (OpenOffice.org) Colour Palettes |
| .MAB | Mozilla | Uncommon Files | Mozilla Address Book |
| .DO | Unknown Developer | Web Files | Java Servlet |
| .STM | Microsoft Corporation | Data Files | Exchange Streaming Media File |
| .SMF | Oracle Corporation | Text Files | StarMath Formula File |
| .TIS | Acronis | Backup Files | True Image Script |
| .HWP | Hancom, Inc. | Text Files | Hanword Document |
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