Avast Internet Security has all the features of Avast Free Antivirus, plus a Silent Firewall, an antispam filter, a command-line scanner, and the new Avast SafeZone (a clean, isolated desktop, so that other applications--even keyloggers--cannot see what's happening), designed specifically for secure online shopping or banking. 
Internet Download Manager (IDM) is a tool to increase download speeds by up to 5 times, resume and schedule downloads. Comprehensive error recovery and resume capability will restart broken or interrupted downloads due to lost connections, network problems, computer shutdowns, or unexpected power outages. Simple graphic user interface makes IDM user friendly and easy to use.Internet Download Manager has a smart download logic accelerator that features intelligent dynamic file segmentation and safe multipart downloading technology to
