- Notifier - displays text message, email, voicemail, missed call notifications in the menu bar. Just like every single other phone on the market.
- MyBattery - simply displays how much battery you have left, in %
- iBluetooth - send photos + files over bluetooth
- Lockdown - My essential application, locks applications (text messages, eBay, anything else)
And, to do things which apple should have done from the very begining, try
- WeatherIcon - updates the weather icon with the action weather
- LiveClock - makes the clock real, it works, it ticks, it tocks