I like to tinker. I always disregard warranty voiding disclaimers. If it can be opened, I’ll find a way to open it and see what’s inside. If it can be modified, I’ll do it. My iPhone is no different. The stock iPhone is meant to function all the time. It’s simple for a simple audience.
Activator – Creates a pull down menu to access many core iPhone functions like turning on and off wifi, bluetooth, airplane mode, etc. I have it configured so that a swipe across the screen will pull down the menu.
FolderEnhancer – iOS4 introduced folders but only allowed 12 apps per folder and no folders within folders. This extension allows pages within folders and no limits to the number of apps in a folder. You can also have folders within folders. As an experiment, I was able to create 10 layers of folders. I was too afraid of creating an 11th level, not knowing where it’d take me.
HapticPro – There’s no feedback on iPhone touch screen. This extension vibrates the iPhone when a button is pressed. You can adjust the vibration length and events that cause the vibration. Seems a little gimicky but I like the slight feedback.
Iconoclasm – Rather than the standard 4 x 4 layout of apps, this lets you change it to what you want. I’m currently using a 4 x 5 layout with a fifth column of apps. This lets me squeeze in more apps per page. There’s a number of different layouts possible up to 10 x 10.
Infinidock – One of my favorites, this extension lets you add unlimited apps to your dock. To reach apps outside of current view, you can scroll or create “pages” in your dock. All my frequently used apps are now on my dock.
LockInfo – This extension creates a pull down menu that can be activated on the lock screen, home screen, or any of the pages. I installed the HTC clock plugin to have a big clock and weather on my home screen. At any other screen, I configured it so that a swipe down from the top of the screen pulls down quick info like email, tweets, and messages.
Multifl0w – This simulates the Mac expose feature. It allows you to visualize apps running in the background and quickly access them. It runs in parallel with Apple’s multi task implementation so does not create any extra drain in battery life.
Mywi – Last, but my very favorite jailbreak app is Mywi. It lets you turn your iPhone into a mobile hotspot. You can create a wifi network with password and turn it on and off. The speed is pretty fast, dependent on your iPhone signal. However, it burns through the battery pretty fast and heats up your iPhone. Not recommended to use your iPhone as a true mobile hotspot. Get a dedicated device if you plan on using it a lot. The heat generated and battery drain will wear out your iPhone battery. That said, i has come in really handy for those few times I’m without wifi access.