Here is my review for your product:

Pros:

• There is a lot of supported website
• Nearly support any kinds of video
• Easy to use
• Open source, everyone can contribute on it.

Cons:

• Nothing for this product

My comment:
It is very great tool for download video.

For this product, I like to mark it as
8.4/10

Good work on hunting, thank for bring us a good product

(Please noted that it is my personal opinion only)