At the risk of banning :)
Try Morfik. Have a free version, native databhase support, is data aware and executes in browser and stand alone, pure ajax

>>Look at RealBasic. It compiles to Windows, Linux, and Mac and has plugins (not ODBC) for all the major databases. Data handling looks clean. Very active community and they post updates to the product about twice per year. Only downside I see is lack of built in reporting.
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>Does it develop browser based apps or just desktop apps?