Ever double click a CSV or XLSX file on your mac and have to wait 30 seconds while Numbers loads? And when it loads it's filled with a ton of crap you don't need? Then I wrote this for you (well mostly me, but you might find it cool too). A small, fast spreadsheet for the Mac, written entirely in Swift. Free and MIT open source with XLSX as the native file format. 156 functions, incremental recalc, Excel-style keyboard editing.