The launch of the iPhone 3G S has thrown open new avenues to developers.
However the dilemma they face is to develop apps only for the new OS, which will exclude old users, or otherwise. So, most developers are upgrading old apps to meet the requirements of the new hardware.

While deciding which apps to have could also pose a problem to users, here is a list of five apps that are must have for iPhone and iPod users. The first one is BeejiveIM 3.0 by Beejive Inc. The IM integrates iChat, MSN, Yahoo, GoogleTalk, Facebook IM, ICQ or Jabber and has options to even SMS out making you live 24/ 7. The app costs $9.99.

Flickit is an app for capturing and uploading images to Flickr. It stands to gain with the new 3 MP camera. Flickit allows you to title and geotag multiple photos and upload them on your Flickr page. It is free and can be used with the older version phones as well.

AP Mobile uses the iPhone OS 3.0 push feature to pop up top stories. It is a great way to keep updated with breaking news. ESPN ScoreCenter gives you all the sports updates.

Star Defense by NGMoco Inc is a gaming app that uses the push notifications feature to send out challenges to your friends. It costs $5.99. And finally for your To Do lists “Remember the Milk” is a great app. It works with Google calendar and reminds you of all your tasks, even when you are offfline, through SMS.

These apps and many more will help you out in all your tasks.