GObjects implement a very useful object-system for the C programming language.
They are easy to use, but writing them can be a bit tedious due to the amount of boiler-plate code. So, it's only natural to create a little tool to do that for you.
Rupert is Perl script that does just that. Rupert is not the first of its kind, but it is the one I'm currently using. It's named after Rupert the Monkey, a well-known character from the early days of the GNOME project.
Easy. Pass it the prefix and full name of the GObject you'd like to create.
cd rupert
./rupert.pl Funky FunkyMonkey
creates funky-monkey.c and funky-monkey.h, including some example
methods, a property and a signal.
Of course, you must still understand GObject for this to be useful. But it saves some typing.
Rupert is released under the terms of the GPLv3, but the code it generates is not - you can put that under any license you want.