flareGet is a full featured, advanced, multi-threaded, multi-segment download manager and accelerator for Linux, It allows user to pause, resume or monitor the download speed. The application is free to use on it’s lite version, but not open-source,there is also a pro version that cost around 20$ that can be bought directly from the official [...]
An interesting and detailed howto on apt, first posted on linux mint community tutorials
Intro by Wikipedia:
The Advanced Packaging Tool, or APT, is a free user interface that works with core libraries to handle the installation and removal of software on the Debian GNU/Linux distribution and its variants. APT simplifies the process of managing software on Unix-like computer systems by automating the retrieval, configuration and installation of software packages.