I wonder is it time for Comodo have their own download manager?
I think FDM will be the good sample for you to develop as security dpwnload manager.
FDM not only a download manger they can download torrents, download youtube vdos, convert files, etc.
FDM have many features over IDM except only one thing is… file virus check to after download.
The trigger of virus spread always start at open files from normal download & torrents.
Since FDM is open source that’s mean you can modify to your products.
If can success this developing you’ll get both security download & torrent security.