Adobe Acrobat Reader (1994) 21 Document DOS MacOS Windows OS2

Acrobat Reader is the free software from Adobe used to read, view, and print documents created by the commercial Adobe Acrobat product. Its primary strength is that documents appear and print identically across differing systems.

• 1.0
• 3.x

Quattro Pro (1987) 39 Spreadsheet DOS Windows

Quattro Pro, initially just named "Quattro", is a spreadsheet application from Borland International. It competed against Lotus 1-2-3 and Excel, and had several advantages including tabbed sheets, and the ability to handle up to a million rows. Quattro Pro was the subject a lawsuit by Lotus, simply because because Quattro Pro copied their menu user interface, but Lotus claimed this was not allowed. This also affected The Twin and VP-Planner.

• 1.0
• Pro 1.x
• 2.x
• 3.x
• SE 1.0
• 4.x (DOS)
• 5.x
• 5.6 (DOS)