We provided an overview about the new Wayback Machine beta last week.
... Gary Price ... has written an in-depth article about the new Wayback Machine for ITI NewsBreaks. He also includes a few words about another Internet Archive Initiative, Archive-IT
via Resourceblog
There's is an interesting resource that I found when I was digging around trying to answer a question for my CILIP update column. 'Is it possible to prove exactly what was on a particular webpage at any moment in time?' I found FreezePage which does exactly that. You can type in a web address, add your name, and save it to a folder. The resource will then provide you with a URL of the frozen page, with a date and time that you can refer other people to. It worked reasonably well - I tried it with one of my pages, but it didn't store the menu bar, some of the images, the Google adverts or the social media bar - most of that stuff (but not all) does come from 3rd party sites, but it's still a bit of disadvantage.
Of course, if you don't like that, there's always the Wayback Machine, which stores sites/pages that it chooses to, on its own time scale, but while you can't take snapshots, you do stand a fair chance of finding older pages. Alternatively, you can try the UK Web Archive, which has been going since 2004 and has a specific UK bias.
If that's not helping - try the cache of a search engine. Many search engines will provide you with access to the most recent cached version of a web page that they've got in their database. In Google simply type cache:URL to view a specific page if you want speedy access.
WebCite®, a member of the International Internet Preservation Consortium, is an on-demand archiving system for webreferences (cited webpages and websites, or other kinds of Internet-accessible digital objects), which can be used by authors, editors, and publishers of scholarly papers and books, to ensure that cited webmaterial will remain available to readers in the future. A WebCite®-enhanced reference is a reference which contains - in addition to the original live URL (which can and probably will disappear in the future, or its content may change) - a link to an archived copy of the material, exactly as the citing author saw it when he accessed the cited material.