"A subclass of HttpResponse which will transform a QuerySet, or sequence of sequences, into either an Excel spreadsheet or CSV file formatted for Excel, depending on the amount of data. All of this is done in-memory and on-the-fly, with no disk writes, thanks to the StringIO library."

recommended by a friend, have not used, $30 MS Excel add-in.

"Extract data from new and old Excel spreadsheets on any platform. Pure Python (2.1 or later). Strong support for Excel dates. Unicode-aware."