Here is a list of different companies offering some great tools to help you customize your twitter. The great thing about a lot of these links, is the “other” sites and articles they lead you to about all kinds of interesting and relevant information on the Web, that you may have heard snips about but just didn’t find the article or review when your originally heard about it.
twitfollow.com – Coming soon..
tweettop – Tweet Top is the latest and greatest from Twitter people on popular topics. We update the latest thinking from topic experts every 15 minutes or less. Pick a Topic below and we’ll deliver it to you 24 x 7. All the top “Tweets”, All the Time.
Huitter – Mutually, GTalk2Twitter, Microsites, Feeds, and more yous can also request a tool.
MyCleenr – Unfollow your inactive following.
Who Follow Whom – Find out who follows whom, simple apps.
Twittangle – a free service that helps you untangle the mess of having too many friends on twitter. We allow you to rate and tag your friends and then filter your timeline to help you easily find the tweets that are most important to you! NEW Now you can create custom groups of your followers and filter your timeline by that group.
Tweet-Rank – Tweet-Rank provides you the relevance of each tweet by checking how much followers you won or lost with each tweet.
retweetrank – a representative of the number of times a user have been retweeted by others recently on twitter.
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!
twtrfrnd.com – A new follower? Should you follow back? Find out if you have common followings with them, and which people you follow that follow them.
Mr. Tweet – Discover and Maintain Great Relationships. Helping you find great people and followers relevant to your interests
Topify – Power Twitter email notifications.
Tweepular – Know your popularity on Twitter.
Who Should i Follow – Find your friend on Twitter
Twerp Scan – check the number of followers of everyone on your contact list, the number of people they are following, and the ratio between those.
Search Twitter – Default search engine on Twitter, provided by Twitter.
Tweetvisor – Tweetvisor is a web-based interface that extends Twitter’s meaning.
Twitt(url)y – track and rank what URLs people are talking about on Twitter.
Twistori – Love, hate, think, believe, wish, feel..you can filter by these word.
Qwitter – e-mails you when someone stops following you.
SplitTweet – Easy management for multiple Twitter accounts and brand monitor.
CoTweet – Designed for businesses using Twitter to engage existing customers and attract new ones, CoTweet is a comprehensive Twitter business platform that supports both proactive marketing communication and response-driven customer support.
TwitterFeed – Automatic post your blog entry to Twitter.
Tweet Later – Scheduled Twitter post.
Twist – Monitoring trends on Twitter
Does Follow – Follower checker
Scantac _ Changes with you!
Refollow – Refollow helps you discover, manage, and protect your Twitter social circle.
TweeterTags – Twitter application, currently in public beta, which aims to add to the existing functionality of Twitter by allowing users to tag themselves, and find others according to similar tags.
Twalala – a client for Twitter that allows you to control what you see, and more importantly, what you don’t see in your twitterstream.
TwitterSnooze – Hit the snooze button on your “verbose” Twitter friends.
Twimailer – Tired of shallow e-mails from Twitter when someone follows you? Want to know more about the people who are following you? Twimailer is a free service that delivers that information right to your inbox!
Tweepler – Tweepler is a much needed and more intuitive way of processing your Twitter Followers.
Twitter Karma – is it like Plurk?
TweetEffect – Find out which of your Twitter updates made people follow or leave you. Simply enter your Twitter ID in the following form.
Tweepme – 100% opt-in group of Twitter users who all chose to follow each other on Twitter. When a new member joins, every other member automatically follows the new member, and the new member follows them back. The process is gradual and happens over the course of weeks or months depending on the number of TweepMe members.
Twitoria – Twitoria finds your friends that haven’t tweeted in a long time so you can give them the boot!
Twitnest – display followers like a nest..
Twollo – Find and Follow Twitterers with similar interests to you – automatically, for FREE!
TweepDiff – Compare Twitter friends and followers.
TwitterRatio – Shows the ratio of your followers to friends.
Twitter100 – Just another Twitter management tool.
iFollowBack – Follow back your followers..
Friend me Please – Make more friends on Twitter.
TwitHive – Monitor and Interact with the Twitter Hive Mind
Foller – Twitter service that can provide you with the most detailed information about a specific Twitter user in the least amount of time!
FollowLists – Create and share your Twitter friends.
TweetValue – See how much your Twitter value ($$$)
TwitterGrader – Grade your Twitter account.
TweetStats – Analyze your tweet..
TwirGraph – Make graphic for your Twitter.
Twittords – Add words you use in Twitter, IM clients, and SMS!
CityTweets – See Twitter users in specific city
Monitter – Simple. It’s a twitter monitor, it lets you “monitter” the twitter world for a set of keywords and watch what people are saying.
VisualTwitter – Picture post on Twitter.
TweetScan – Email Alert System
TwitSpy – Watch real time tweets.
Twitscoop – Better than Twitter itse
iTweet – Built-in auto-refresh, search, Twitter trends & hashtags, view user bio, location, URL inline with tweets.
TweetCube – TweetCube allows you to share files on Twitter. Simple as that. Blast out your images, videos, music and more with just a couple of clicks, and your files are automatically posted on Twitter.
TwitPic – Upload pictures and shorten url service..