.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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Home File Types Spreadsheet Files 123

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.

Associated Developers and Software

	NeoOffice by Planamesa Software Inc.
	Gnumeric by Open Source
	Apache OpenOffice by Apache Software Foundation
	Lotus 1-2-3 by IBM
	PCB123 by Sunstone Circuits

Top 123 User Languages

Top 123 File User Browsers

Desktop Friendly?

Mobile Friendly?

Top User Operating Systems


Windows 10	Windows 11	Windows 6	Windows 8.1

Associated Operating Systems

	Windows
	Mac
	Android
	Linux

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
.JSW	JustSystems	Text Files	Ichitaro 4.0 Document
.OXT	Sun Microsystems	Plugin Files	Apache OpenOffice Extension
.SDD	Programming Sunrise	Data Files	Smart Diary Suite Data File
.OTS	Apache Software Foundation	Spreadsheet Files	OpenDocument Spreadsheet Template
.XLSX	Microsoft Corporation	Spreadsheet Files	Microsoft Excel Open XML Spreadsheet
.OOT	Apache HTTP Project Management Committee	Data Files	Apache OpenOffice Text Document
.SBL	Adobe Systems Incorporated	Graphic Files	Shockwave Flash Object
.SDS	Oracle Corporation	Data Files	OpenOffice.org Chart