Website without password and usernames
HTTrack Website Copier
One thing I learned recently, is that if you have a very old static website, and the client wants you to back up it with the limitation of not knowing the control panel of the website. Luckily, HTTrack Website Copier is able to do a siterip and find every single web page and asset for you.
All you need to do is to create a folder with a project name of your choice, and put your URL in the next page.
Please make sure the location you store the website has plenty of room for the siterip.