Julia :-)

I think this will just default to the winner being the one everybody has used. Every web dev needs JS, so of course this will get the most votes.

Npm is the worst It Duplicate dependencies multiple times in a same project. Too much package unmaintained and buggy.

Pip never give these problème.

IMO: go get is bloody awesome, but yeah, of the four choices, npm wins

Perl's CPAN toolset is pretty awesome.

Go get!

I think npm is the best package manager available.

Hex for Elixir/Erlang has strong potential too but hasn't gained that much of fame like npm did.