Since you will likely be using portable Excel on untrusted computers (internet cafes, university labs, hotel business centers), your data is at risk.
Excel 2013 Portable: A Comprehensive Guide to On-the-Go Spreadsheets excel+2013+portable
: Automated indexes or help guides that list specific software versions for troubleshooting or archival purposes. Database Search Queries Since you will likely be using portable Excel
Unfortunately, a version of Microsoft Excel 2013 (or any full Office suite) does not exist as a legal, first-party release from Microsoft. Microsoft Office is designed to be installed into the Windows Registry and system folders. hotel business centers)
: Sites offering "portable" versions of Microsoft Office 2013 that do not require a standard installation and can be run from a USB drive. Documentation Lists