Background
Her screen flickered. Then, a window appeared. Not Word, not Excel. A clean, minimalist interface with four icons: , Sheet , Slide , Note .
If you need portability or a free option, consider these more secure alternatives: End of support for Office 2013 - Microsoft Support
However, for the average user concerned with security and file compatibility, the "better" choice is arguably to stick with supported, official versions. The portable version remains a powerful tool for specific use-cases, but it requires a knowledgeable user to wield it safely.
: Microsoft offers free, web-based versions of Word, Excel, and PowerPoint. You can access them from any computer with an internet connection simply by logging into your web browser.
Here is a text overview regarding Microsoft Office 2013 Portable, its safety, legality, and superior alternatives.