I think the norm is around 1400 euros, an upper salary may be 2000 euros or 3000 if you're very lucky. If you're self employed (like me) you also pay half in taxes.
Edit: as an example, I have difficulties charing more than 20-25 euros/hour here, but for the same jobs I charge 80-100 dollars/hour when I work for the USA.
Your numbers are apples, and the US numbers are oranges. The US numbers are gross - before taxes, whereas yours are monthly, after tax figures in euros. 37K works out to 3000 a month, roughly, before taxes. Given how high Italian taxes are, that would put you at something like 1500 to 2000, which actually isn't unreasonable for a developer here.
It's still not very good money though, compared to what you could get elsewhere. It might be if things were still cheap here, like 15 years ago, but prices went up a lot with the Euro.
Edit: as an example, I have difficulties charing more than 20-25 euros/hour here, but for the same jobs I charge 80-100 dollars/hour when I work for the USA.