Hi Ernad
some years ago i have to choose which gui to use, and the first reason was linux and windows o.s. even if on that days i wrote only on windows.
looking around i was impressed on marinas-gui, first for his semplicity.
after writing some code in windows i have the luck to have a pc for free ( my job is ict technician ) so i install debian 6 and after debian 7, so i port my software to linux in less than a week, compiled and run.
two years ago less or more Carozo ( the builder of Marinas ) for some reasons i do not know stop to upgrade his software to new versions of linux.
So i have decided to go with Hwgui. I take a lot of time to convert the software, but now almost the 80 % of code works.
at the same time i take the decision to work with netio, so i write a little server code. Netio is fast, is sure, and works an all o.s. and if you want to use different database, like postgres ao other it works.
( a little note, have you conisdered to add the support to firebird ? )
At the same time i take a look to OOHG that seem to be well mainteined by Fernando Yurisich, and so i write a little client to test the netio capability.
all works
then next year i'll go with hwgui for desktop application on both o.s.
regards