This is probably the only Firefox extension that can automatically sort downloads based on url/website/host. It's RegExp Download extension equivalent in Chrome. I can even directly copy the rules from that extension to this one to make it works. If you dont know how to use regex rule you can check it out there too.

It deserved way more than 1 star, which I dont understand why someone rated it so. It works like a charm so take my 5 stars:)