ODS4CL
ODS4CL can produce spreadsheets in OpenDocument (OpenOffice) file format. It can produce multiple page sheets but cells can't contain formulas. This package depends on SCLF.

Homepage: http://wcp.sdf-eu.org/software/

Download: http://wcp.sdf-eu.org/software/ods4cl-20090827T153948.tbz

License: LGPL

Here is an example:

(ods4cl:make-spreadsheet "/tmp/foo.ods" '(("My Sheet" (a b c) (1.2 3.4 5.6) ("foo" "bar" "baz"))))