Facebook has revolutionized the way we communicate. It has been a boon for both consumers as well business owners around the world. Also, it has brought friends and relatives closer. It has made the world boundary less. The demand for Facebook Application Development is witnessing a huge surge. Web development companies are providing novel services like Facebook Integration with Php.

Ping.fm
This application allows one to update status. This one is a MUST for every WordPress blogger.

StumbleUpon
Every action one takes via Stumble Upon bar is posted to Facebook profile and shared with friends. It has the power of generating a tremendous amount of web traffic to a blog.

Blog Networks
This application allows to appear your blog within the main Blog Networks interface. But this depends on your popularity.

Notes
Notes is an excellent application and important tool if one writes for a blog. It can be an effective branding tool. It allows to subscribe to your own RSS Feed and will automatically import it to your profile each time a new post was made. All your friends get a notification abot a new status update made on your profile.

BlogVote
This is another simple applications which allows people to vote on blogs.

oodle
This allows one can share online classifieds through its WantList application

Viagogo
This is an amazing application which allows one to manage ticket listings. Viagogo launched a tickets application on Facebook, letting users buy and sell their tickets to live events. Users can get updates like price change.

Uber
It lets you grab, listen and share music within Facebook.

TERRALEVER
Its stuffCloud application allows one to apply a weighted list of favorites on profile, which incorporates the brands and products of ones liking or want to have. It also introduced Photo Flipbook, providing users the ability to interact with online photos as if they’re in a book.

Qoop
With this Facebook users can convert digital photos and illustrations into prints, photo books, posters, postcards, mugs, T-shirts and more items.

Jobster
This application will let Facebook users search for jobs and connect them with people, information and opportunities necessary for enhancing their careers.

attendio
The application helps to discover new happenings all over the country, at the local level. One can search for events or peruse suggested events from within Facebook, and set mobile reminders or add the events to their iCals.

Ma.gnolia
Its social bookmarking app built on the Facebook platform allows member’s latest bookmarks be available for friends to see.

Twitter
Twitter is now on Facebook. If one makes an update in Twitter, it will be imported as a new status in Facebook. This allows users to post directly from Facebook to Twitter.
The above list is not exhaustive; there are many other Facebook applications which have been highly useful to the Facebook users.