Need Web2.0 browser

Time to have a Google Web2.0 browser:
That has ability to social bookmark, RSS reader, integration with facebook and contacts, docs, emails, etc . Bookmarking using delicious etc and reading blogs with google reader etc leads to my multiple registrations/maintenance at different sites. Also

Also I use Avantbrowser (since that provides ability to save and open multiple tabs at once), and that does not have google toolbar. you can try this at www.avantbrowser.com