I'm looking to export data to excel from Delphi without having to own a copy of excel, is this possible?
N.B. CSV will not do.
FlexCel, earlier an Opensource now managed by TMS (http://www.tmssoftware.com/site/flexcel.asp) works great.
You can also check TmxNativeExcel at http://www.torry.net. Comes free and is uses native Biff format. I've not tried this though.