Top Twitter Tools

Organization Apps

• TweetDeck - A simple and fast way to experience Twitter.

Multiple Account Apps

• Splitweet - Multi-account Twitter reputation management for corporate users with more than one Twitter account?
• HootSuite - Manage multiple Twitter profiles, pre-schedule tweets, and measure your success.
• CoTweet - How Business Does Twitter.

Mass Follow/Unfollow Tools

• Tweetils - Unfollow twitterers who aren't following you back and follow twitterers that are following you, but you're not yet following!
• TwitterSnooze - Hit the snooze button on your "verbose" Twitter friends.

Twitter User Directory

• WeFollow - A directory of Twitter users organized by interests.

CMS Plugins

• TwitterTools for WordPress - A plugin that creates a complete integration between your WordPress blog and your Twitter account.
• Twitter Module for Drupal - Provides API integration with the Twitter microblogging service.
• Twitter Status and Twitter Feed - Joomla Extensions

Firefox Plugins

• TwitterFox - A Firefox extension that notifies you of your friends' status on Twitter.

Mobile Apps

• Tweetie - For iPhone - multiple accounts, favorites, deleting, following, trends, location, re-tweets, photos and more.
• TwitterBerry - A mobile client for posting updates to Twitter on BlackBerry devices.

Sharing via Twitter

• TwitPic - If you have a Twitter account then you already have a Twitpic account, just login to Twitpic with your Twitter username and password and you are all set to upload and share photos.
• TweetCube - Allows you to share files on Twitter.

Stats

• TweetStats - In ur Tweets, Graphin' Your Stats!
• TwitGraph - Visualize twitter search results.