Allasoft downloader is a useful utility that works a lot of the time to download from difficult sites. It does leave some temporary files scattered behind in its own folders to clean up, but that’s not a significant problem. The only real shortcoming compared to other products in this category is that it lacks a built-in browser with automatic streaming url identification. You have to be able to pick out the url to download from yourself in your own browser, and many sites obscure that.