Can you recommend a good modern GUI download manager (wget wrapper?)

Gwget

Gwget is a free graphical frontend for of Wget. GWget supports all of the main features that Wget does, as well as parallel downloads. Its name is derived from GUI - Graphical user interface, and Wget.

You can also install it by

sudo apt-get install gwget

Multiget

MultiGet is an easy-to-use GUI file downloader. 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. It supports resuming downloads if the Web server supports it, and if you like, you can reconfig the thread number without stopping the current task. It's also support SOCKS 4,4a,5 proxy, ftp proxy, http proxy. In v0.8.0, a new feature was introduced, that is so called P2SP, or in other words, get file from multiple servers, and combine the data from different site into one file. This makes downloads complete much faster.

You can also install it by

sudo apt-get install multiget

Fatrat

Fatrat is an open source download manager for Linux written in C++ and built on top of the Trolltech Qt 4 library. It is rich in features and is continuously extended.

You can also install it by

sudo apt-get install fatrat

Uget

Uget (formerly urlgfe) is a Free and Open Source download manager written in GTK+ , it has many of features like easy-to-use , cross-platform (Windows & GNU/Linux) , support pause and resume , classify download , every category has an independent configuration , and more ...

You can also install it by

sudo apt-get install uget

Steadyflow:

To install, run this from a terminal:

sudo add-apt-repository ppa:sikon/steadyflow

sudo apt-get update

sudo apt-get install steadyflow

Assuming that you use Firefox, I'd suggest to use DownThemAll. It does not only support multiple downloads and pausing/resuming, but also multiple connections for one download.