FlashGet is not available for Linux but there are plenty of alternatives that runs on Linux with similar functionality. The best Linux alternative is DownThemAll, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to FlashGet and many of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to FlashGet are Free Download Manager (Free), uGet (Free, Open Source), aria2 (Free, Open Source) and Xtreme Download Manager (Free, Open Source).
Persepolis Download Manager is utility for download easier and faster with aria2 and improved it. - It supports HTTP(S) & FTP. - Persepolis configures aria2 automatically for maximum speed and it have a GUI for using easier.
This is an experimental Firefox 57 download manager with multithreading support. It can download files with multiple connections to the server. Depending on the network condition, this may increase the download speed.
DownZemAll is a free and open-source mass download manager for Windows, Mac OS X and Linux. It helps you to select, organize, prioritize and run your downloads in parallel. Based on the Qt5 framework, DownZemAll! is written in C/C++.