FireDM

When it comes to choosing a good Internet download manager, the options are not at all scarce. Be that as it may, finding a good, free, open-source, and malware-free one can prove to be a bit of the challenge.

Having said that, if you're looking for a dependable download/video manager that ticks all the boxes above, then you might want to check out PyIDM.

PyIDM is an open-source Internet download manager build with Python and it's based on the following well-respected libraries: pyCuRL/libcurl, youtube_dl, and PySimpleGUI.

The whole premise behind the app is that it uses these well-known (and open-source) libraries, so you can be sure no funky business will go down, as well as the fact that it's designed to be uber-fast with an engine that supports multi-connection (multithreading).

Besides boasting multi-connection support, the app also has the following goodies: automatic file segmentation, the option to resume uncompleted downloads, scheduled downloads, a nifty clipboard monitor, proxy support (for HTTP, HTTPS, Socks4, and Socks5).

You are also provided with the freedom of choosing the exact download speed limits, the number of maximum concurrent downloads, and the maximum number of connections per download.

It's worth noting that the app supports YouTube and most of the other popular video sharing, streaming websites. Since we're on the subject, it's also worth mentioning that you can download entire video playlists, as well as download fragmented video streams, as well as encrypted HLS media streams.

Last but not least, let's talk about the app's GUI. While it's true that this is not one of the app's strong points, it's worth keeping in mind that the app is actually fully open-source. Still, while not modern, the GUI is actually well-organized, meaning that no matter your experience with similar apps, you should able to find your way around without much effort.

Not modern-looking doesn't mean that the GUI is bare-bones, though. For example, you are provided with well over 140 GUI themes to choose from, which is a lot more than most other download managers combined can offer.

To conclude, if you're looking for a super-fast, dependable, and clean download manager for general use and you don't mind a 90s-looking GUI, then, by all means, give PyIDM a try-out.