Features:

The features that are mentioned below are liked by most of the users. Just read it maybe you can get some satisfaction;

Free
Simple and immediate
Possibility to download more files at the same time
Play videos offline with the default player
All download formats supported mp3 m4a mp4 m4v MOV Avi WMV etc.
Auto-detect videos and easily download
Full-featured download manager to pause resume and remove downloads
Download several files at the same time
Save downloaded files in a folder
Download videos in the background
Fast download speed
Hardware acceleration.
Check the progress in the download bar
HD video download supported
Download video & music