FireDM

FireDM: A handy internet download manager that comes with support for many features and multi-connection

FireDM is a good open-source internet download manager that was built with Python and it's based on the following libraries ( e.g pyCuRL/libcurl, youtube_dl, and PySimpleGUI), and it uses them so that the user will know, that no shady stuff will go down, while it's designed to be fast with an engine that supports multi-connection.

The program also comes with the following features (e.g. automatic file segmentation, resume uncompleted downloads, scheduled downloads, clipboard monitor, proxy support), while also being able to select the exact download speed limit.

FireDM offers a fully open-source GUI, well-organized, meaning you will find your way around it with ease, even though it might not look like much.

Overall, FireDM is a pretty great and also fast, internet download manager that is great for general use, clean and easy to understand interface, and offers a lot of features.