^^
Of course, handball is close to basketall, they share several fundamentals.
The only other sport I know where you bounce a ball with your hands is gaelic football, terrific sport that one ! :)
So yes, one difference with basketball is that you are allowed three steps like in the NBA :p
It's not that big in Europe, it's very popular in Germany (the best league) and in the Nordic countries but it's non-existent in the UK or in Italy.