Meet blu. Now you can experience Twitter in a whole new way.

DestroyTwitter is a compact though robust Twitter application built to run on Mac, Windows, and Linux using Adobe AIR.

MadTwitter is a Windows application that lets you read “twits” written by your friends and publish your own. It’s inspired in Twitterrific, a really nice application for Mac.

Mixero. The new generation Twitter client for people who value their time and are tired of information noise.

Social Whale. Currently in beta. Must follow them to get an invite.

Tweetsort takes all your favorite features from the vast range of applications and merges them into one simple, sleek, easy to use web application.

Twanalyst - Get your free Twitter personality test! ... and some sensible tips, too.

TweetStats - Graph your Twitter Stats including: Tweets per hour, per month, tweet timeline, reply statistics.

Twinfluence is a simple tool for measuring the combined influence of twitterers and their followers, with a few social network statistics thrown in as bonus.

Twitter Grader provides grading stats and information for your Twitter account There is also a blog grading feature. I've used both and find the tools to be fun and useful.

Twitterholic. Our twittastic robots scan the Twitter public timeline for new twits to tweet. A few times a day, we calculate individual statistics for each twittering twit in our database.

TweepSearch was created to allow people on Twitter to search their followers bio and location information.

Twellow is a directory of public Twitter accounts, with hundreds of categories and search features to help you find people who matter to you.

TwitDir is a Twitter users (some call them twitterers) directory. Also includes Top 100 lists. Useful search tool!

We Follow is one of the more popular Twitter directory sites, used by many celebs and power users.

Twitter.com's own built in search. This is my own search tool of preference, as it just does that and like Twitter, offers simplicity when all I want to do is search for something!

DoesFollow.com - Find out who follows who follows who with this simple search tool.

Friend or Follow - Who are you following that's not following you back? Who's following you that you're not following back? Find out!

Mutuality is a simple service which allow you to make bulk operations with your account.

Qwitter e-mails you when someone stops following you on Twitter

Tweepler Is an easy, more enjoyable way of processing your New Twitter Followers.

Twitoria finds your friends that haven't tweeted in a long time so you can give them the boot!

Twitter Karma is my tool of choice for managing my friends and followers. It provides a great view of who you're following and if they are following you back, and lets you bulk follow or unfollow though be careful doing any "mass" follow, unfollow. Great tool, just don't abuse it or Twitter may bite you!

Twitterless tells you who stops following you and graphs your follower history over time, making this info available in a variety of useful views. I use this service regularly so I can keep track of who has stopped following, etc.

Twollo. Find and Follow Twitterers with similar interests to you - automatically, for FREE! I just started using this service and will review it in more detail when I see more results.

Twubble can help expand your Twitter bubble—it searches your friend graph and picks out people who you may like to follow. I've yet to try this yet but it's on my Twitter to-do list. I gotta say, I do love the name!

Hashtags are a community-driven convention for adding additional context and metadata to your tweets.

You can add quick definitions from our home page or via Twitter, but signing up on WTH?! allows you to add even more content, like expanded descriptions, related hashtags and links. 2.

TwitHire is a free job listing service for Twitter. Our goal is to help employers promote job opportunities and reach out to candidates by simply tweeting.

Find your perfect job before someone else does Many jobs appear on Twitter before they're posted on the major job search engines. Twitter Job Finder helps you find them fast.

Send files to your friends, but just dragging any file on to Tweetr. Tweetr will automatically upload your file and when it is done will provide a short url to send to your friends

TwitPic lets you share photos on Twitter. One of the popular services seen in use on Twitter.

TwitPrint.com is a Twitter printer! Use it to print your tweets. You can make it include pictures too.

Record your voice and put it on Twitter! Go to your Twitter page and listen to your voice message. All your followers can listen to it, too!

Share pictures and status updates from your mobile. Automatically add your location to your pictures and status updates

Another highly popular Twitter app. twt.fm lets you share music on Twitter. Catch is it's just 30 seconds of each but still cool!

Say hello to your followers with a video Bubble Tweet! Amusing and clever tool.

FlashTweet is a mass follow tool that simplifies the process of adding your twitter friends. You can add multiple Twitter accounts to your profile, discover who you are following that is following you back, mass follow users based on search terms, unfollow multiple friends at once, schedule tweets in advance & much more.

HootSuite is the ultimate Twitter toolbox. With HootSuite, you can manage multiple Twitter profiles, add multiple editors, pre-schedule tweets, and measure your success.

I use Tweet Later for my other accounts and love it. They are always improving the functionality and keeping it fresh with the Twitter API. Highly recommended!

Receive, send tweets, and find new friends instantly, without ever reloading your page.

Twitterface is a web-based, personally-branded, multi-account Twitter interface.

Free Twitter Alerts by Email! Keep track of conversations that mention you, your products, your company, anything, with hourly updates!

, Tweetake is here to allow you to back-up your followers, people you are following and Tweets with just one click.

Feature rich account and follower management. And colorful too!

Save time with Topify. Powerful Twitter email notifications.

Easy management for multiple Twitter accounts and brand monitor

Take your tasks anywhere with this feature-packed application. See tasks located nearby, add and complete tasks on the go, organize upcoming tasks, and sync it all seamlessly with Remember The Milk.

Find any twitterer's retweets!

There are times when you would like to cut out the chirping and just focus on what is important. Filttr makes it easy for you to do just that.

GroupTweet is constantly listening for direct messages sent to your group's Twitter account. When a direct message is received, GroupTweet instantly publishes it as a tweet from the group account.

Tracking the links you share on Twitter.

Twitter Digest lets you read Twitter updates in a more manageable fashion. Just pick the usernames you'd like to generate a digest for, and you will see all updates made by them during the past full day.

TwitThis lets you easily share links with your friends, and find new followers.

Install the FREE browser add-on so you can see other users' clickable profiles. It only takes one click and it's quick and safe.

A tool to easily view what's hiding behind the Twitter content box. See the full Twitter background!

Many forums, Blogs, and other web services allow you to have images as part of your signature. twitsig.com allows you to display your current twitter status as an image.

Introducing The iTwitter Tab (free) for your iGoogle page.

This handy and easy to use short cut/quicklinks toolbar brings Twitter so close that it is only one click away. You'll have access to a large variety of highly requested tools & resources.

Twessenger is a Twitter add-in for Windows Live Messenger.

Twitbin is a firefox extension that allows you to keep up with all of your Twitter conversations right from your browser sidebar. Send messages, receive messages, share links, and more from Twitbin, the best twitter addon for firefox out there.

TwitterFox is a Firefox extension that notifies you of your friends' tweets on Twitter. This was my first ever Twitter tool used. Great option for light users with not too many followers.

What can I say? If you're bored, visit Favrd, random "favorited tweets" that are often hysterical!

Have a secret you're just dying to tell? Need to confess? Make it a Secret Tweet.

TweetPsych uses two linguistic analysis algorithms (RID and LIWC) to build a psychological profile of a person based on the content of their tweets. Interesting tool!

When its too long to tweet, just TwitWall it! TwitWall is the easy-to-use, quick-to-blast-out, instant blog companion for Twitter.

Sponsored Tweets is a new Twitter advertising platform that connects advertisers with tweeters. Advertisers can create sponsored conversations on Twitter. Tweeters can earn money for spreading the word.

Twittertise allows you to advertise on Twitter and track the success of branded communications with your customers.

witterHawk is a real time targeted marketing engine that will find people talking on twitter now by your chosen topic and location, allowing you to really hit your target mid conversation with ease.

Monetize your Twitter background. Very unique concept. Twittad is a Social Media Affinity Network that connects Advertisers and Twitter users. By using Twittad, Twitter users can monetize their profiles & Advertisers can reach ALL of Twitter; the Website, 3rd Party Applications and Mobile Devices!

Capture any webpage: Just add Aviary.com/ in front of the URL!

Need a photo for your social network? It's never been easier.

I recently found Skitch and am always amused at what others upload and share. Nice tool! (Currently for Mac only, dangit!)