Google page rank gone ( ? ) what else can we use ?

Google page rank appears to have gone, and even if it`s still available apparently it`s no longer up dated. But I found it useful, not only for my own site but also when looking at other sites. As an example we had a customer on who was ordering loads of stuff so we checked out their website to see if they really were a large established firm. However, anyone can have a flash website, but when it was ranked by Google you did at least know it was a bit kosher !

What do other people use in place of Google page rank ?

Is this helpful?:

https://www.linux.com/learn/open-web-analytics-piwik

It certainly doesn't cover the latter.