So far I am really impressed with PureBasic ( http://www.purebasic.com/ ). Over the weekend I put together a small database app that compiles to an 81KB single .exe. The IDE/Form Designer is nothing fancy, but it seems to work well. It compiles for Windows, Mac and Linux. I purchased a license with lifetime updates for only $99.00.
The only databases it supports out of the box though is SQLite, Postgresql and ODBC. Of course it's almost impossible to tell how many developers are using it, but there seems to be a good amount of activity on the forum. There is apparently enough users that Chilkat has support for it.