iPhone Twitter Applications is almost same with the BlackBerry Application for twitter (at list about the device right?)
1. Tweetie :iPhone Twitter Applications
- Handle multiple twitter accounts.
- View your timeline, replies, direct messages and favorites.
- Browse your friends and followers.
- Post new tweets, retweet.
- Reply directly to tweets and send direct messages.
- Follow and unfollow people.
- Mark tweets as favorites.
- Navigate reply chains.
- Inline web browser.
- Post links with automatic link shrinking via bit.ly.
- Upload pictures to twitpic.com.
- Update your twitter location.
- View twitter trends and perform custom searches.
- Save your favorite searches.
- Implements the full twitter API.
- Uses secure connection (https).
- Go to User shortcut
- Nearby search
- Themes and adjustable font size
- Bookmarklet support
New in 1.2
- Instapaper integration
- Optional landscape keyboard
- Image compression control (for uploads)
- Nearby radius control
- Cached avatars
- Drafts persist across relaunches
- Resend tweet on network error
- Refined UI and reply-chain navigation
- Swipe shortcuts
- Disable “Accounts” back button
- Public timeline
- Block / Unblock users
- Control # tweets loaded on launch
- Remember scroll position on launch and reload
- Improved “load newer”
- Link to TwitPic.com in inline picture viewer
- Faster favoriting
- Handle $AAPL style stock links (to stocktwits.com)
- Send DM text to email
- Japanese localization
Well…if you interested to know more detail about Tweetie :iPhone Twitter Applications feel free visit their website at http://www.atebits.com/tweetie-iphone/. We Thought that Tweetie is one of Twitter Tools
2. Twinkle :iPhone Twitter Applications
Twinkle, Twinkle Little App, Posting Tweets Is Now A Snap
Discover, connect, and send messages to people nearby. Upload photos and update your Twitter account. Contact old friends and make new ones, all with Twinkle, the location-aware network for the iPhone and iPod Touch.
NEW: Twinkle 1.4 is now out, featuring a landscape map feed, a built-in minibrowser, blocking and lots of other cool new tricks. More detail check it out http://tapulous.com/twinkle/
3. Logspost:iPhone Twitter Applications
4. Hahlo: iPhone Twitter Applications
If you are using twitter for marketing needs I think you could check one on top twitter tools in Top Twitter Marketing Tools


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