Microsoft Office Excel - Microsoft Office Excel is a commercial spreadsheet application.

Wikipedia - Wikipedia is a free online encyclopedia, created and edited by volunteers around the world and hosted by the Wikimedia Foundation.

Google Sheets - Synchronizing, online-based word processor, part of Google Drive.

Encyclopædia Britannica - Explore the fact-checked online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of objective articles, biographies, videos, and images from experts.

Apple Numbers - Numbers lets you build beautiful spreadsheets on a Mac, iPad, or iPhone — or on a PC using iWork for iCloud. And it’s compatible with Apple Pencil.

Kiwix - Kiwix enables you to have the whole Wikipedia at hand wherever you go!