In general, as well as on resumes or CV's, it is appropriate to capitalize the names of computer applications: MS Word, Excel, Power Point, (the) Internet, Internet Explorer, etc.

Is Excel spreadsheet a proper noun?

Types of nouns

For example, we can excel (verb) in our work, but we also use Excel spreadsheets. When we refer to an Excel spreadsheet, we are using a brand name, which is a proper noun.

Should Microsoft be capitalized?

Microsoft style uses sentence-style capitalization. That means everything is lowercase except the first word and proper nouns, which include the names of brands, products, and services. (Microsoft has more than 500 offerings. ... Use lowercase for everything else.