Taweet (beta) is a free Twitter application and social calendar that allows people and businesses to streamline promotional scheduling for events, product launches, lifecasting and more!  Unlike Twitter scheduling applications you may have seen before, Taweet is focused on promoting the topics of your Future Tweets (FT) up until they occur to create buzz or to share with friends.  Your public profile on Taweet displays all of the Future Tweets (FT) that you schedule.  Your profile on Taweet is not only an event promotion tool but also a social calendar for sharing with friends.  All posts and comments on Taweet are organized into a familiar discussion format and sent back to Twitter to drive traffic to your Future Tweets.  Our “Post Now” feature allows you to create threaded topics for all of your real-time Twitter posts.  After you sign into Taweet for the first time you can then begin to link multiple Twitter accounts together.  This will allow you to easily switch between accounts without having to sign in each time. Taweet offers a familiar user interface where you can create and manage your Future Tweets and also view your Twitter stream, replies and messages.  Getting started with Taweet is a breeze!

Website:  Taweet.com

On Twitter:  @taweetcom

Social media shifts power from companies to customers. Companies no longer control the conversation – social media puts customers in control.

Hashwork is a social business tool which helps your company adapt to this change in two ways: (1) Hashwork provides a social presence on the web for your company and your community of employees, customers, prospects and partners, and (2) Hashwork equips everyone in your company to “work socially,” by connecting and sharing Twitter-style with customers, partners and others on the internet — publicly and privately.

Hashwork gives your company a way to have open and authentic conversations with customers, connect customers with each other, and cultivate an engaged community of advocates on the social web.

Website:  Hashwork.com
On Twitter: @hashworkteam

BigTweet installs easily and quickly as a bookmarklet on all the major browsers and allows you to post to Twitter from any web page. Automatically capture the current page title, URL and any highlighted text. Insert special Unicode characters and shorten URLs with the Bit.ly API right from the bookmarklet window. Optionally add a Bit.ly API Key to track and view statistics on your shortened links. No registration is required.

Website:  BigTweet.com
On Twitter: @BigTweet

With What the Hashtag?!, you can:

• Review stats and usage charting for the past seven days – Users can quickly view the number of tweets which have included the hashtag, top contributors and other information such as tweets per day, percent retweets and number of contributors
• Pull a transcript – Missed a chat or want to view the back channel conversation of a recent conference? Users can go back and read old tweets by pulling a transcript of the hashtag
• View real-time stream of hashtags – Users can watch the real-time stream of tweets of their favorite hashtag which includes a number of filters to reduce potential noise from retweets, links and replies.

What the Hashtag?! is a growing resource for all of your hashtag use and research.

Website:  Wthashtag.com
On Twitter:  @wthashtag

Tweetie is a Twitter client for the iPhone and iPod Touch.

Website: atebits.com/tweetie-iphone/

TweetMeme is an aggregation service for Twitter.  TweetMeme is able to categorize these links into categories and subcategories, making it easy to filter out the noise to find what your interested in.

Website:  TweetMeme.com

StockTwits is an open, community-powered investment idea and information service. You can think of it as Bloomberg for the little guy and gal. Eavesdrop on what traders and investors are talking about RIGHT NOW or contribute to the conversation and build your reputation and following as a savvy market wizard.

Website: StockTwits.com

Website: HelloTxt.com

Twingly Microblog Search is a search engine for microblog services like Twitter, Jaiku and Identi.ca. Features include RSS and Email Alerts, Widgets and Excel-export.

Website: Twingly.com/microblogsearch

ChatterBox is a platform that allows you to monitor conversations of interest on Twitter.

Website: Chatterboxhq.com