Microsoft Excel

Microsoft Excel is a spreadsheet application developed by Microsoft for Microsoft Windows, Mac OS X, and iOS. It features calculation, graphing tools, pivot tables, and a macro programming language called Visual Basic for Applications.

1987–1990
The X is actually a X with an L on one side, pronouncing XL, or, in this case, Excel.

2010–2013
Microsoft updated the XL logo.

2013–present


The famous XL logo was no longer used to make the logo apply to metro standards.