FlashGet is a leading download manager and has the highest amount of users on the internet. It uses MHT(Multi-server Hyper-threading Transportation) technique, supports various protocols and has excellent document management features.
FlashGet is a freeware without any adware or spyware.
Link to Free Download (http://www.theinfostride.com/forum/index.php?action=downloads;sa=view;down=29)