Gambas – “Gambas Almost means Basic”. Its a Rapid Application Development (RAD) tool released under GNU General Public License (GPL). It is similar to Visual Basic but not a clone.
Gambas is very easy to learn. It can be used to develop database applications, opengl applications, network applications etc. With Gambas you can develop applications quickly and easily.
I hope this site will be very useful for you to learn Gambas.