iPhone is surely the smartest phone the mobile industry can offer. For those who STILL don't know about it, here's a layman defination: iPhone combines an iPod (portable music player),

a digital camera device and a mobile phone. This device is like a PDA (personal digital assistant) that also includes an Internet browser application. iPhone also work with WiFi networks in addition to conventional networks.

After reviewing several applications, I picked these ones out as they are surely some of the best apps that AppStore (Apple's iPhone app marketplace) has to offer.

1) IM+ All-in-One Messenger

Developer: SHAPE services

A multi-platform messenger client – All-in-one Messenger, with facebook support, avatar support, dialogs and groups. It supports AIM, MobileMe, MSN, Yahoo, ICQ, Jabber, Google Talk, MySpace IM too. It includes IM Push mode where users can stay online with IM+ even with the application switched off.

2 iTriage

Developer: Healthagen LLC

A medical reference application, ITriage is available for iPhone and iPod Touch. Through this application you can search + browse hundreds of medical symptoms, diseases, treatments and their medical tests. A consumer can check on symptoms to diagnose minor or major diseases by himself or herself, and a doctor can use it to check references about diseases and allowed medications for them.

PIC https://iphoneapplicationlist.com/category/native/

3) iDeals

Developer: fiveohfive, LLC

A shopping application for the iPhone and iPod Touch, it offers access to the day's best deals on consumables. The bargain deals are brought from two sites: FatWallet and SlickDeals. Using iDeals, one can stay up-to-date with 'deal of the day' sites including Woot!, MacZot and Amazon.com deals.

4 Offline News reader

Developer: MH

This is a feed reader application for the iPhone. You can add and view any RSS/ATOM feeds using this application. It functions like a traditional desktop/laptop RSS reader like Google Reader, except that this one allows you to read the feeds on the iPhone.

5 iMagazine

A graphical electronic magazine, a magazine reader for the iPhone.

6 iActu

A newspaper reading application for the iPhone, there are more than 500 newspapers which can be read using this iPhone application.

7 eBay mobile

An iPhone-optimized version of eBay, this is a native iPhone eBay client. It offers a slick and fast eBay experience for a mobile device like the iPhone.

8 Traffic UK

This application is about UK public travel, it shows reported traffic incidents according to your iPhone's reported location (via GPS, WiFi, cell towers, etc.), You get all traffic incidents and problems around your current position, in map/list form.

9 Quintessentially

Developer: Quintessentially

This is an iPhone city guide application, providing exclusive access to specialist travel content, anytime, anywhere. This app aims to be the ultimate in travel knowledge for the world's important tourism and travel destinations. It offers access to must-have travel information and tips.

10 Xumii

Developer: Xumii

This application is for social networking on the iPhone. A mobile social address book lets you chat with friends, share photos and view status updates across different social networks and communities.

Do you have any other exciting apps to talk about?