Most of us are more or less casual users of Twitter. However, Twitter is gaining significance in business community as well, and corporations have started looking at Twitter as an important marketing and communications medium. Twaitter is a great tool for business users to manage their Twitter account. Twaitter is a completely web based Twitter client, and comes with some really nice features.
Update (1-Sep-2012): Twaitter has now been re-branded as Gremln. Free account still supports tweet scheduling, but is ad supported. Updated links below.
Here is a feature overview of Twaitter:
Schedule your Tweets
Twaitter lets you schedule your tweets. You can schedule it for anytime you want. You can schedule multiple tweets for future, each with a different publish time. This is a great feature for business users as they can schedule their tweets much in advance, based on important upcoming events.
Recurring Tweets
Like TwitRobot, Twaitter also lets you send recurring tweets. You can set your tweets to recur on daily, weekly, monthly, or yearly basis. This is a handy feature for continous marketing of your product.
Manage Tweets using Calendar
Twaitter has a powerful calendar that lets you easily manage all your tweets. You can see tweets for each date, and can easily schedule messages using that.
Feed your Blog to Twitter
You can provide RSS feed of your blog or website to Twaitter. Twaitter will then post a tweet on your behalf whenever a new post is published. You can also modify the format of your tweets.
Built-in Translation
If you follow someone who posts in some foreign language, you can easily translate their tweet on click of a button.
Twaitter indeed carries some heavy weight features for business users. Apart from the above, it also provides features like spell checking, and URL shortening. It lacks some features like mass follow/unfollow, as in Buzzom or Tweepular.