When I visited Python's cheese shop today, I stop for a moment at the total number of packages. This raised my curiosity to look at other languages' package repositories.
1. Perl (11643) http://cpan.org/
2. Python (2392) http://cheeseshop.python.org/pypi
3. Ruby (1587) http://raa.ruby-lang.org/
4. PHP (442) http://pear.php.net/packages.php
Well, I am not making any conclusion out of this, because there are many other factors required for an analysis.