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$16bn health agency managed finances with Excel spreadsheet.
(www.theregister.com)
This is a most excellent place for technology news and articles.
This is why I specified "nearly" the worst. It can absolutely get the job done and has basically every tool you'd need to do the job, but it's pretty much the worst amongst the "this will do everything you need" options.
My thought process was abacus < pen & paper < text file < spreadsheet < database solutions
But a spreadsheet can function like a database. 🤣