* It is not finished *
I don't currently have time to finish it so it's on hold. I don't recommend it as a download manager yet. It can download, but no configuration options are available.
The interesting part about it is the connection between aria2 and a C++ code. You can use that if you want.
Original description:
A gtk2 front-end to aria2c (a download accelerator for linux) written in C++.