What are good alternatives to MCE (Many-Core Engine), and how do they compare?

    # Using Parallel::ForkManager as an alternative to MCE

    use strict;
    use warnings;
    use Parallel::ForkManager;

    my $pm = Parallel::ForkManager->new(4); # Allow up to 4 processes at a time

    for my $i (1..10) {
        $pm->start and next; # Forks and returns the pid for the child

        # This is the code that runs in the child process
        print "Process ID: " . $$ . " processing task $i\n";

        $pm->finish; # Terminates the child process
    }
    $pm->wait_all(); # Wait for all child processes to finish