What are some alternatives?
When comparing Keikai and LibreOffice - Calc, you can also consider the following products
EtherCalc - EtherCalc is a web spreadsheet.
Google Sheets - Synchronizing, online-based word processor, part of Google Drive.
Microsoft Office Excel - Microsoft Office Excel is a commercial spreadsheet application.
Magic Spreadsheet - Human workforce and AI plugged into your Google Spreadsheets
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.
Apache OpenOffice Calc - Calc, part of the https://alternativeto.