Some of the old software before 2010 may not be able to install/run normally on x64 or Windows 10 systems. Be aware of it before purchasing it.
Lotus 1-2-3 was an early spreadsheet application. It became extremely popular in the late 1980s. Lotus had difficulties adapting 1-2-3 to the Windows environment, and was overtaken by Microsoft Excel.
Lotus 1-2-3 Release 5 added additional groupware capabilities, chart maps, and improved database access. This was the last 16-bit version for Windows 3.1x, and was available as part of SmartSuite 3.1, 4, and 4.5.