Software

General Tools

• GNU WGET
• cURL
• HTTrack
• Heritrix -- what archive.org use
• Pavuk -- a bit flaky, but very flexible

Gmail

• Gmail Backup

FaceBook Recovery

Facebook does not currently have an export function.

FriendFeed

• FriendFeed Archiver - not that FriendFeed is on Deathwatch, but someone might be interested

Flickr

• Flickr Edit includes Flickr Backup