: A free, web-based version of Word, Excel, and PowerPoint that requires only a free Microsoft account. WPS Office
The Microsoft Office mobile apps for Android and iOS are free for screens under 10.1 inches. They are highly optimized and much smaller in file size than the desktop suite. microsoft office 2007 highly compressed
Introduced the OpenXML formats, changing extensions from .doc to .docx , .xls to .xlsx , and .ppt to .pptx . : A free, web-based version of Word, Excel,