BitComet is a BitTorrent/HTTP/FTP download client with support for modern BitTorrent features, long-term seeding, intelligent disk cache and video preview of downloaded files.
A lot of users on Reddit reported that BitComet tried to install multiple viruses and adware during the setupBundleware
The installer prompts you to change your default search provider and install a media player. After installation it opens a webpage with an ad for another software install.
KGet is a versatile and user-friendly download manager for KDE. By default it is the download manager used for Konqueror, but can also be used with Mozilla Firefox. KGet is part of the KDE Network package and can download files from FTP, HTTP(S) and BitTorrent sources.
iGetter is a full featured download manager and accelerator. It resumes broken downloads and recovers from download errors. It is excellent utility for files that you want to download at ease.
Progressive Downloader is a free download manager for your Mac that supports multi-thread downloading and mirror search. It's also capable to download files from the most popular file hosting services.
Progressive Downloader Features