Software/services for saving websites - why use them?

I *think *this belongs in IMHO. Apologies if it doesn’t.

Do you use software to save websites? Why do that instead of just using the “save page as” option on a web browser? (Firefox, at least.) What does additional software do that you prefer? And what software do you use? Pros and cons?

(There are some sites I want to save and I’m a bit suspicious, as I know websites disappear all the time and I want to be sure I’ll be able to access the ones I’ve saved.)

Thanks.

I’ve used a program called HTTRack to take snapshots of whole websites, or significant parts thereof, in a couple of contexts:

-My own sites, where I wanted a snapshot of the whole thing in preparation for a move to a new host, or new method of serving content.

-Online manuals or instructions, consisting of multiple hyperlinked pages, when I knew I would have need of the information later, offline, or just didn’t trust that the manual would be there forever.

I’m not at all sure who well it works with modern sites with actively-created pages.

Thank you for your input, Mangetout. Anyone else? Please? We can’t be the only two dopers who save websites.

I previously would use Dreamweaver to pull down entire sites so that I could see how they were put together. There is an extension available specifically for this purpose.

This helped greatly in my own web development. Sometimes the ideas were used, sometimes the exact code. Of course, this worked much better for internal sites (my employer) than external sites as I could also download all the server-side code as well.

I also used it similarly to Mangetout to archive sites that had manuals or other online reference resources that I always wanted available.