Gabut Download Manager

Gabut Download Manager is a download manager for Linux, presented by its publisher under the short description "simple and fast". Software in this category takes over file transfers that a browser would otherwise handle on its own: a link is handed to the manager, which then keeps track of the transfer and of the list of items waiting or already retrieved. The emphasis in the stated summary is on a small, direct interface rather than on an extensive feature set.

It is published by Gabut Akut and licensed under GPL-3.0-or-later, so the code is available to inspect, adapt and redistribute on the same terms. Distribution is listed for Linux only; there is no record here of builds for other operating systems.

Which protocols are supported, whether transfers are split into parallel connections, and how the program integrates with web browsers are not specified in the information available, and are worth checking in the project's documentation if those particular capabilities matter for your work.