Here are some of the most popular FriendFeed tools should help enhance your Friendfeed experience:
FFscheduler: Schedule your FriendFeed posts and send them automatically whenever you like
FFsms: Send your FriendFeed posts via SMS! (Currently, only available only in the US and Turkey.)
FFsummary: The application will send you a feed summary consisting of popular posts to your email on a daily, weekly or monthly basis.
FFoldavatars: It takes you back and shows previous profile pictures of your FriendFeed account.
FFholic: FFholic is a place for FriendFeed users to find lists of most liked and commented entries, most popular rooms and most popular users.
FFthreadkiller: You can check that how many threads a particular Friendfeed user has killed.
FFollo: Find and follow people with similar interests to you – automatically.
FriendFeedLinks: A memetracker that tracks links shared on FriendFeed.
NoiseRiver: An application is based on the friendfeed’s API that aims to extend Friendfeed with notions like: interests and neigbourhood.