The creators of Installer.app have released an easy-to-use utility called IPhoneInstaller that will hack your iPhone and add Installer.app. From there, you can easily add more programs to your iPhone by running Installer.app.

IPhoneInstaller will only run on macs right now, but both Intel and PPC Macs will work.  No plans for supporting Windows have been announced.

New! We now have a single command Mac (PPC & Intel) installer for Installer.app, get it here. This will automate the entire jailbreak and Installer.app installation process for your 1.0 or 1.0.1 iPhone, including automatically downloading the right firmware files. Be sure to read the short README file for installation instructions.

If possible, it is recommended you do a full restore of your iPhone using iTunes before installing this, but this is not required — it will simply make for a cleaner install.

• Download iPhoneInstaller

With the amount of applications being released for the iPhone accelerating, it has become difficult to keep track of what is available. To help you find your way through the world iPhone software, we are introducing a new iPhone Application Directory.

Inside you will find the most up-to-date list of iPhone applications available. In addition, the application directory will always be one click away from the sidebar on any iPhonador page.

Enjoy!

• Visit iPhonador’s iPhone Application Directory

The guys at Mac Daddy World won first place in the Iron Coder Live contest at the C4 conference last week by developing an iPhone videoconferencing application. Obviously the camera located on the back of the iPhone presents problems for video conferencing, so the Mac Daddy World guys solved this by using a custom stand with mirrors.

No downloads are available yet, but there are lots of pictures to check out.

• Visit the Mac Daddy World iPhone Videoconferencing page
• Updated: Download the Source Code
  

User ‘Pack’ on IRC (#iphone-uikit) has discovered an easy way to use your own prerecorded sound files as your voicemail greeting. This is great for if you want to use a prerecorded novelty greeting or if you just don’t want to record your greeting through the less-than-hifi iPhone microphone.

Here’s the process:

1. Take the sound clip you want to use and covert it to an .amr file and save it as “greeting.amr”
2. On your iPhone, go to voicemail and start recording a voicemail greeting as you normally would
3. Press “Stop” to end the recording. It doesn’t matter what you record at this point
4. Before clicking “Save”, use your favorite method to copy your “greeting.amr” over “/var/root/Library/Voicemail/greeting.amr” on the iPhone. You can use scp, sftp, iphonedisk, iPhoneInterface, etc to copy the file
5. Click “Save” on the iPhone. It will now upload your prerecorded greeting to AT&T.
6. Call yourself to test it out!