GNUCash is opensource accounting software.

If you want the SQL database integration, you must first have libdbi 
and libdbi-drivers installed, and then pass the DBI=true flag.

Note that this is the 2.6.0 BETA release - the upstream authors do
*not* recommend using this version in production.  The 2.6.0 stable
release is planned for the end of December 2013, so be patient...