When your internet connection is a little on the slow side, large files take ages to download. In these cases, using a download manager is highly recommended!
MultiGet is a good example of a simple yet effective download manager that can help you deal with large-sized downloads. This small app can establish multiple connections to the server and perform a multi-threaded download, which maximizes the performance of your Internet connection.
Other nice features in MultiGet include a handy category system for all your downloads, support for proxy servers and a handy floating icon which you can drag your download links to. Plus, it doesn't even require installation! On the downside, it doesn't monitor the Clipboard for copied links, nor is it embedded with the web browser.
If you're looking for a simple yet efficient download manager, MultGet may be worth a try.