saw this mentioned on seomoz (but don't hold that against it  )

http://www.screamingfrog.co.uk/seo-spider/

like Zenu but runs on a mac and more user friendly.  Is paid, but only $100.

I had a play with the free version and it looks like it does what it says on the tin.

Nice find Gurtie.

Actually, it is 100 POUNDS not dollars...still a great find.  Difficult to find a decent spider for the mac.