Lotus 1-2-3 was an early spreadsheet application available for MS-DOS. It became extremely popular in the late 1980s, displacing the former leader VisiCalc. Lotus had difficulties adapting 1-2-3 to the Windows environment, and was overtaken by Microsoft Excel. Spreadsheet functionality was also included in Lotus Symphony. Later versions were included in Lotus SmartSuite.
Wanted: Additional Ports of Lotus 1-2-3, Lotus 1-2-3 1.0 (non "A"), Lotus 1-2-3 for SUN
Release 2.00 increases the maximum number of rows and adds support for add-ins, EMS memory, 8087 and 80287 math co-processors, enhanced macro commands, and running from a hard drive.
The earlier versions of Lotus 1-2-3 release 2.x contain copy protection. In later versions, this gave way to user serialization.