1
vote
3answers
886 views

What Excel formats are (most) compatible with LibreOffice and Google Docs? [closed]

I use Excel (and occasionally Numbers), but I want to be able to share with users of Google Docs and LibreOffice (and I may want to switch in the future). What's the most compatible format to save my ...
5
votes
5answers
758 views

Does any spreadsheet allow you to create your own functions?

I've always been frustrated when using spreadsheets by the inability to define my own functions when there is no existing function to (cleanly) do what I want. Does any spreadsheet offer this ...