This is the first open source app that lets you write posts, upload photos, and edit your WordPress blog from your iPhone or iPod Touch. Avaliable via AppStore for free (link).
We wrote about several applications, that allow to write email in landscape mode. Now there is a better application. It is called Firemail. It does the same thing as the others, but it does it for free. It is avaliable via AppStore (link).
UPDATE: Please, consider reading our Jailbreak & Unlock FAQ, especially if you have questions or troubles.
This is a step-by-step tutorial. If you have iPhone 3G this guide will help you jailbreak and activate the device. For iPhone 2G it will also perform the unlock.
I recommend using 2.2 firmware, because iPhone 3G unlock is avaliable now. But you can use it with old v2.1, v2.0.1 and v2.0.2.
LiveJournal.app allows you to post new entries to your blog at LiveJournal.com with photos (as much as you want) or images (uploaded to LiveJournal Scrapbook) and receive and send personal messages.
This application is free, avaliable via AppStore (link).
While browsing cool applications I've found PocketDyno (AppStore Link). This application measures the performance of the vehicle. It uses internal accelerometer, not GPS. So iPod and old iPhone users can try this application.
Take a look at appsamuck.com. They create sample lessons for each of 31 days. Now 13 lessons are avaliable. Eant to make fire or get familiar with GPS? I recommend all potential iPhone developers to take a look.
The key here is simple: "Taking baby steps is better than taking no steps at all!" We plan on writing 31 iPhone applications in the next 31 days. We will publish both the executable and the source code for each application. Our goal is for each of these applications to be useful, interesting, and straight-forward. Someone considering writing their first iPhone application should be able to look at these applications and "get it".