It was very well made.  It&#x27;s easy to use and yet but also has great features and shortcuts for power users. There&#x27;s lots of genius little features not available elsewhere, like grouping columns or formulas over columns or rows (e.g. sum(A:A)).  I often abused it with 50mb spreadsheets (a bad practice fyi) and it could often take it.  The version I used rarely crashed.<p>For most software I use, I see lots of things that need improvement.  With Excel, I can only think of a few.  (If anyone from Microsoft is reading this, please add matchifs, it&#x27;s desperately needed).