Download Manager

P2P

it's a peer 2 peer transfer that if both pc's connected to the same server even if they are in different countries they still can transfer their files to each others.

torrent

torrent is one of the newest transfer protocol and it transfer between downloading user or more and uploading user or more by using a web server.

Medload

It's Media Download. which, how and what software can download online media players as *.avi, *.flv. like downloading from youtube or other sites