Facebook’s popularity went through the roof after making there service available to anyone, but it wasn’t until they opened up Facebook by making available the Facebook platform, which allows anyone to create Facebook applications for their popular social service. Last time I checked, there were over 10,000 free Facebook Applications available to users, and the number is continuing to grow with each passing day.

Unfortunately, with so many applications, it can be tough to weed through them all trying to find the ones that have any value. This resource was created as a way to collect the best Facebook Applications in one spot for easy reference. I have broken them down into individual categories to make navigation a little easier.

Blogging/Feeds

  • Flog – Helps you display your blog’s feed.
  • Google Reader – Displays your Google Reader feeds.
  • MyRSS – Allows you to display any feeds in your blog.

Calendar

Entertainment

  • Pets – Allows you to create and maintain a pet.
  • Super Poke – Allows you to send enhanced pokes to your friends.

Facebook Wall

  • Advanced Wall – Simple application that adds a more advanced wall to your profile.
  • Funwall – Allows additional wall features, plus tagging photos and YouTube videos.
  • Super Wall – Improves the Facebook wall. Allows for videos and photos.

Friends

  • Top Friends – Allows you to display your best friends.

Games

  • Blackjack – Allows you to play Blackjack.
  • Chess – Allows you to play Chess.
  • Nintendo Games – Play NES Nintendo games on your profile page (is this legal?)
  • Poker – Allows you to play Texas Hold’Em.
  • Scrabulous – Turn based word game.
  • Tetris – Adds Tetris to your Facebook page.
  • Warcrafter – Displays your World of Warcraft (WoW) characters.

Media

  • iLike – Add videos and music to your profile. You can dedicate songs and see what concerts friends are attending.
  • Netflix – Displays your Netflix queue.

Miscelleanous

  • Are You Interested? – Allows you to ask friends that question. No idea why this application is so popular with Facebook users.
  • Bumper Sticker – Create a bumper sticker and add to friends profile.
  • ChipIn – Assists you in collecting donations from friends.
  • E-mail – Allows you to e-mail people from your Facebook page.
  • Hot or Not – Rate and meet other Facebook users.
  • Paypal – Manage your Paypal account.
  • Mobile – Allows you to add photos and more from your mobile phone.
  • Polls -Display a poll for readers to participate in.
  • Resume – Allows you to display your resume.
  • Simple Stock Quotes – Allows you to get stock quotes.
  • To-Do – Allows you to add, categorize, and prioritize your tasks.

Social/Web 2.0

  • Del.icio.us – Display your Del.icio.us bookmarks.
  • Digg – Displays your most recent 5 Diggs.
  • eBay Auctions -Make wishlists, display your auctions, and browse other auctions.
  • My Flickr – Displays your Flickr photos.
  • Powncer – Shows your most recent public displays from your Pownce account.
  • SkypeMe – Allows you to make Skype calls from your Facebook page.
  • Twitter – Update your Twitter status from your Facebook page.
  • Wikipedia – Allows you to search Wikipedia from your profile.

Storage

  • Files – Integrates Box.net storage on to your profile page.

Video

  • Flixster Video – Allows you to see what other friends like and compare videos with other users.
  • Video – Adds video and gives you the option to record from a webcam.
  • YouTube Skins – Allows you to display and share YouTube videos with your friends.

Writing

  • MyLists – Allows you to create lists and share them with others.
  • Zoho – Gives you the ability to create and edit your Zoho documents from your Facebook page.

If you’re unable to find ones you are looking for, this list will be updated regularly as more useful applications are created or existing ones are improved and warrant a spot on this list.