Categories allows you to create folders on your desktop. This allows you to organize your desktop rather than having it be a huge mess. For example, you can have these icons for folders with all games and communication applications:
The app comes with a GUI configurator so that you do not have to edit text files. When you add an app to a category, it is removed from the springboard list so that it no longer shows up on the main desktop. When you remove the app from the category it is returned back to the springboard. Here is an example of a categories folder full of games:
There are so many tools, some for Mac OS, others for Windows, different versions... Complicated. So let's summerize a little bit.
If you have iPhone 3G, you'll be able to install 3-rd party non AppStore applications (through separate applications called Cydia and Installer) and run these applications. If you have old iPhone, in addition to that you'll be able to unlock the device (use with any carrier).
There are two methods: quickpwn and custom firmware method. First one is for quikly pwning and jailbreaking the device without restore. You should use it if you have unlocked device or an AT&T contract.
If you are Windows user:
Go for WinPwn. The current version is 2.5.0.2 (also called 2.5 beta-2). Download here. It supports both iPhone and iPhone 3G, firmwares 2.0, 2.0.1, 2.0.2. You can use either quickpwn or custom firmware method.
There is a separate QuickPwn tool for Windows. The current version is RC3. Download here. Do you need it? Yes, if you want to quick pwn and you do not like WinPwn (or you had problems with it).
If you're using Mac OS:
Go for PwnageTool. The current version is 2.0.3.1. Download here. Works with 2.0, 2.0.1, 2.0.2 firmwares using custom-firmware method.
There is a version of QuickPwn tool for MAC OS. The current version is 1.0.0. Download here. It works only with firmware 2.0.2. Do you need it? Yes, if you want to quick pwn.
QuickPwn is not a replacement for PwnageTool, they are different tools and provide different features, QuickPwn is for quickly pwning a device, whereas PwnageTool is designed to custom build and tailor the ipsw production process, both tools will be actively developed in the future.
Recently a new project has been started, called XiPhone. It will be based on XPWN. So functionality similar to WinPwn and Pwnage will be present (jailbreak, unlock, etc). In addition to that developers plan to include:
Auto downloading of stock firmware files from apple’s site (no need to hunt for it then select it)
Wizard based modern GUI (created with .net 2.0), and Vista Style UI.
Export of firmware settings so users can pass around an XML file which contains a configuration that works for them.
Auto updates to the XiPhone software.
Community based wallpapers used for Bootscreen, Restore screen and others
Enabling / Disabling of options available based on the device you select.
Unfortunately, only Windows platform users will be able to use XiPhone.
Apple подал на патент (20080204426), который описывает технологии, потенциально используемые в MacBook Touch:
Much of the 52-page filing describes methods for accurately detecting and deciphering a plurality of simultaneous contacts on a touch screen, which sets the foundation for future tablet-based products that users can manipulate using not only more than one finger, but more than one hand.
IM+ is a very popular messanger among WindowsMobile users. Now it is avaliable for iPhone throught AppStore (link). It supports AIM/iChat, MSN, Yahoo!, ICQ, Jabber, Google Talk and MySpaceIM. And it is FREE.
The creator of this video says: "The iHologram app was not real. It was an illustration of an idea I had which I believe could work with the technology (combining anamorphosis and motion sensing). Unfortunately I’m just an ideas person, and I can show how things should look, but I’m no hardcore programmer."