Rekall is a database front-end, somewhat in the style of Microsoft Access(tm). However, Rekall is not itself a database, and does not include a database. By this we mean that data is stored somewhere else in an SQL server, and Rekall is fundementaly just a tool to extract, display and update that data (of course, it does lots more than that, it does forms and reports and scripting and .... you get the idea). It is database agnostic, and does not have any preferred database.
Rekall can do lots of the things that you would expect of a database front-end (or if it can't, let us know!). You can design and use forms and reports, you can more...
latest version; Rekall RunTime application included; drivers for xbase/xbaseSQL, mySQL and PostgreSQL
Mac OS X 10.3 or later, MacPython 2.4.1 (or any other Python 2.4.1 framework build), Trolltech's Qt/Mac 3.3.x C++ framework (download bookmarks for an installer of Qt/Mac and MacPython 2.4.1 are provided with the package).