This is the ultimate "portable" Office. You don't need to install anything; just log in via a browser to access Word, Excel, and PowerPoint for free [28]. OpenOffice Portable
Kingsoft’s WPS Office (formerly Kingsoft Office) has a legacy free version from 2013 that is often repackaged as portable legally. It looks exactly like Microsoft Office 2013 but is legitimate. microsoft office 2013 portable best
Office 2013 is designed for Windows 7 and newer. It is famously incompatible with older operating systems like Windows XP. Why It Was "Best" for Its Time This is the ultimate "portable" Office