With Google Docs you're able to create GoogleScripts which allows to write Javascript Functions which you can use in Google Spreadsheet columns.
I looking for a spreadsheet application (offline) which allows to use Javascript-Functions in columns. (or JS-like syntax for functions)
Reason: Dislike VBA/Macro-syntaxes and these snake-long build-in functions in columns.
I looking for something like that, but need it Offline. Lost already data of some spreadsheets after holiday and sometimes Google Spreadsheets don't load properly and you've to wait until they fix the issue. (not good for work-files)
Would pay for such a software.