PgWorksheet is a simple GUI frontend to PostgreSQL for executing SQL queries and psql commands without using the psql command line tool : http://pgworksheet.projects.postgresql.org/
Henri, did you intend to submit a package for review? This isn't really the proper place to request that packages be added to Fedora unless you're willing to get involved with the packaging work. If you don't have a package to submit, please consider adding your request to http://fedoraproject.org/wiki/PackageMaintainers/WishList
Thanks Jason, I add it to the wishlist.