Internet Download Manager is not available for Linux but there are a few alternatives that runs on Linux with similar functionality. The best Linux alternative is Persepolis Download Manager, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Internet Download Manager and four of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to Internet Download Manager are Turbo Download Manager, flareGet and MultiGet.
Persepolis Download Manager is utility for download easier and faster with aria2 and improved it.
it's a gui for aria2 and it works great on all major Operating systems
Turbo Download Manager is a multi-threading download manager for Chrome and Opera as a browser extension and for Android, Windows, Linux, and Mac OS as an stand-alone application. It can be used to boost your downloading speed as well as to protect your download on a non-stable...
flareGet is a full featured multi-threaded and multisegment download manager for Linux, Windows and Mac. It supports browser integration through addons and many more features.
It has features like IDM, and even better.
MultiGet is an easy-to-use GUI file downloader for Windows/Linux/BSDs/MacOs. It's programmed in C++ and has a GUI based on wxWidgets. It supports HTTP/FTP protocols which covers the requirements of most users. It supports multi-task with multi-thread on multi-server.
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Free and based on aria2. But unlike aria2, has a proper GUI