There are a few free download managers out there that are rather useful and I would like for them to be added as options for the users, they are rather useful with features such as spidering links, captcha completion, resuming downloads, downloading a file from multiple sources to increase speed.
Free Download Manager [FDM] (an open-source free download manager that does support things like torrents)
https://www.freedownloadmanager.org/download.htm (https://www.freedownloadmanager.org/download.htm)
Xtreme Download Manager [XDM] (a free alternative to IDM)
https://subhra74.github.io/xdm/#downloads (https://subhra74.github.io/xdm/#downloads)
JDownloader (a free downloader based on Java with a strong community)
https://jdownloader.org/ (https://jdownloader.org/)