Download anime? I'm not sure. I'm pretty sure animefreak.tv just streams anime. I don't think it lets you download it. Then again, I haven't been there in a while. I'll check it out later. Why do you need to download anime, anyway?
I don't know any sites that only have anime for download. I normally just use torrents :/ The website isohunt.com works quite well. You'll need to have a torrenting program before you start downloading things though.