.123 File Overview

File Extension: 123
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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What is File Extension 123?

Open Source developed the 123 file extension, also know as a Lotus 1-2-3 Spreadsheet file, for the Gnumeric software package. Annoymous user data statistics infer that 123 files are most popular in China and with those using Windows 10 devices. A high percentage of these users browse the web using Google Chrome.

Top 123 User Languages

Top 123 File User Browsers

Desktop Friendly?


Mobile Friendly?


Most Popular 123 File Countries

Top User Operating Systems

Windows 7 Windows 10 Windows 8.1 Windows XP

Associated Operating Systems


Other File Types Related to 123 Files

Extension File Type Developer File Category File Type Description
.WR! IBM Spreadsheet Files Lotus 1-2-3 Spreadsheet
.WK! IBM Spreadsheet Files Lotus 1-2-3 Spreadsheet
.ODCCUBEFILE Apache Software Foundation Uncommon Files OpenDocument 1 Chart
.JNLP Oracle Corporation Web Files Java Web Start File
.RPT SAP Data Files Crystal Reports File
.DUMP Microsoft Corporation System Files Dump File
.BAU Sun Microsystems Settings Files Apache OpenOffice AutoText File
.PCD PokéCheats Game Files Pokémon Wonder Card File
.DIF Microsoft Corporation Data Files Data Interchange Format
.OTT Apache Software Foundation Text Files OpenDocument Document Template

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