Portable Microsoft Office 2003 Word-Excel

Word

A word processor and is considered to be the main program of Office. It possesses a dominant market share in the word processor market. Its proprietary DOC format is considered a de facto standard, although its most recent version, Word 2007 uses a newer modification of the .DOC file format, but has the capability of saving and opening the old .DOC format. Word is also available in some editions of Microsoft Works
.doc .dot-files

Excel

A spreadsheet program. Like Microsoft Word, it possesses a dominant market share. It was originally a competitor to the dominant Lotus 1-2-3, but it eventually outsold it and became the de facto standard.
.xls .xlt-files