A powerful Gtk3 based spreadsheet that features full Excel function and file compatibility and additional functions not found in Excel, and statistics operations based on R. Functionality can be extended with Python and plugins. Other file compatibility includes OASIS ODF, Quattro Pro, Psion 5, Paradox DB, and more (see homepage). GDA database support is available with the +database variant.

WWW: http://www.gnumeric.org/
