Yes I use it.

Lazarus (Gui for freepascal) is like BORLAND DELPHI for Windows, but for Linux&Windows and it compiles with n900.

Lazarus is a complete development plattform to program everything including GUI. It has a GUI for developers and a designer for GUI's and it compiles on n900.
It's a complete development environement for n900 (even on device!!!)
Instead of C it compiles to freepascal. But it opens all the libraries of C, if the freepascal headers are given.
You can program sound, graphics, networking, ... everything, using the libraries of the n900.

It is based on GTK (like n900!!).


Yes! I am programming with it! And it works very nice!
I can use my delphi programs on windows. I can transfer them to lazarus (on windows). I recompile them on debian which crosscompiles to ARM. It runs on ARM and has QT-support.
It can even write python libraries.

In fact it is the ideal tool to develop for n900.

(It can also openGL, but I've not seen any adaptation for openGLES.)

I've got a compiler on n900.
But I would like to have an easy tool that installs all libraries and recompiles the Lazarus GUI everytime a new version appears.