Nambu Touch is an iPhone® Twitter client that also integrates FriendFeed and Ping.fm.

Features:

• all Twitter operations supported
• set favorites
• tag specific users to follow separately
• translation of foreign language messages
• Twitter search
• submit via Ping.fm
• avatars supported

The Good:

Nambu Touch for the iPhone® follows on the Nambu Network Inc.’s Nambu for Mac OSX 10.5+. It has a good-looking UI and supports just about every Twitter operation you could want, down to searching and tagging specific users for filtering/following. Submission via Ping.fm is a nice feature.

The Not-so-Good:

Nambu Touch is a very promising application that already supports many useful features. It is compatible with the iPhone® and iPod Touch™ with the iPhone 2.1 software update. Also, be aware that it costs $1.99 at the App Store.

Tweetwave.com rates it: ★★★★

Twitterfon is a fast, simple Twitter client for the iPhone® and iPod Touch®. Its own PR material states it is “focused on 80% of your tasks in Twitter such as viewing friends/replies/messages in the timeline and also sending/replying tweets.” We aren’t sure what happened to the other 20%, but when we find out, we’ll let you know. ♦♦♦♦

Tweetie is a twitter client for iPhone® and iPod Touch®. It costs $2.99 from the iPhone® App Store and boasts a few features:

• 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).
• New: Go to User shortcut
• New: Nearby search
• New: Themes and adjustable font size
• New: Bookmarklet support

Very cool: ability to load additional tweets from further back in your timeline (something twitteriffic won’t do). ♦♦♦♦♦

Twinkle is a location-aware network for the iPhone® and iPod Touch® that helps you discover, connect, and send messages to the public timeline and also to people nearby.

Features:

• geolocation to find “twinkers” in your area
• runs as stand-alone or along with Twitter
• upload and share photos

The Good:

Twinkle can run as a stand-alone app or in conjunction with Twitter (you can toggle Twitter on/off). The focus of Twinkle is the geolocation feature which allows users to see “twinks” from other users in their geographical area. Uploading photos is supported as well. All of the usual Twitter operations are also present.

The Not-so-Good:

Twinkle is a fine application, but if you are not interested in viewing tweets/twinks from people in your area, then it doesn’t really add anything to your Twitter experience.

Tweetwave.com rates it: ★★★

Twitterrific is an application that lets you both read and publish posts or “tweets” to the twitter community website. The application’s user interface is clean, concise and designed to take up a minimum of real estate on your Mac’s desktop.

Twitteriffic boasts a small desktop footprint, and the following features:

• Clean, concise UI with small desktop footprint
• Supports multiple twitter accounts
• Auto refreshing at user defined intervals
• Replies and direct messages are displayed inline
• Number of unread tweets shown in the Dock
• Delete tweets from twitter quickly and easily
• Auto show / hide when new tweets arrive
• Control over window layering and priority
• Single click access to user profile pages
• Switch between friend and public tweets easily
• Keyboard shortcuts for list navigation and more
• Control Twitterrific with AppleScript
• Audio notification for new tweets
• Hotkey to show / hide tweets

This application is also available for the iPhone® and iPod Touch®. ♦♦♦♦♦