Associated .123 software
123 file extension
Lotus/IBM 1-2-3 Spreadsheet File
Run a free instant scan for .123 file errors
The .123 file extension belongs to Lotus 1-2-3, a spreadsheet application from Lotus Software which is now part of IBM.
These files contain your spread-sheet data.
Lotus 1-2-3 was IBM PC's first killer application; its huge popularity in mid-1980s contributed significantly to the success of IBM PC in the corporate environment.
Run a free instant scan for 123 file errors
Additional .123 information
| Author: | Lotus / IBM |
| Type: | Data |
| MIME type(s): |
application/vnd.lotus-1-2-3 application/x-lotus123 zz-application/zz-winassoc-123 |
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Other .123 file extensions
Visitor comments
 | Visitor 2009-02-14 13:00:04 |
What exactly are these .123 files and what software uses them?
| Visitor 2009-08-23 19:23:54 |
How do I open a .123 file?
| Visitor 2010-02-12 08:12:41 |
Anyone?
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