I have been used httrack for many times. It is powerful and complicated to me.
I wish any guys can make some nice configs for general uses. It will benefit
most of us who are not good at technical things. For example, 

1. Download a whole website with max speed. The download should only include
the stuffs under that domain name but must include everything to make the
offline browsing as same as the online one.

2. Only download text and html under the domain name, with limited default
speed.

I believe these two will benefit a lot of non-tech people. Thanks