> Please include ways to start multible projects at once so 
> the software optimally allocated bandwidth (connections) 
> to each project. This could be done from a connection 
pool 
> or some thing like that.

Connection pool: not useful actually if you are not 
mirroring the same website (or at least the same virtual 
network)

But you can start multiple httrack sessions - different 
sessions will have a part of the bandwidth allocated (TCP 
is magic, and will generally split the bandwith between 
connections)