I found this one via a work colleague.
Firefox works pretty well with Sharepoint, but you need to enter your domain credentials every time you authenticate. It turns out there's a way get FF to store the credentials and enter them automatically.
I haven't tested this since I use IE 7 with SP, but I wonder if a similar approach would work with a standalone windows feed reader that would be more capable that the one built into IE 7; the key is "NTLM authentication support". (The Outlook 2007 and FF feed readers are miserable, IE 7 is decent by comparison).
... Firefox does have NTLM just that you need to configure it ... NTLM stands for NT LAN Manager ... Microsoft’s authentication protocol...
... launch Firefox and enter in the URL field - about:config
From there it will provide a long list of settings, on the ’search’ bar type NTLM, you will see 3 entries ... Double click on network.automatic-ntlm-auth.trusted-uris
From there you will enter the DNS name of your Server...
If you use multiple SP servers, you can separate the name by commas. "DNS name" is just the familiar name, like "server_name.megacorp.com".