iTouch App: Pastebot

 Pastebot is a powerful new clipboard manager that stores text and images copied from your iPhone/iPod Touch. Copy something you want to save, run Pastebot and it automatically gets imported for you to access later. 

Organize your clippings in folders and use the built-in search to find what you saved quickly. Run a “Find & Replace” filter on a block of text or convert an image into Black & White. Maybe you just need to crop and rotate an image. This is all possible with Pastebot’s powerful editing and filtering tools. Pastebot contains 14 filters with more on the way.

iTouch App: Ultimate Guitar Tabs

 Ultimate Guitar Tabs is an easy and convenient application for viewing guitar tabs, bass tabs, chords, and even drums tabs. Apparently, UG is the only mobile application giving us unlimited access to the world's largest database of Tabs from Ultimate-Guitar.com. You will literally view and browse the collections over 300,000 tabs. Learn and practice your favorite songs wherever you are. Make your guitar happy cause all your tabs are not at your hands.

iTouch App: Skype

 Yes, Skype is now available for iTouch and iPhone devices. You can now call Skype-to-Skype, wherever you are - either on 3G or WiFi! The good real good news is that it's completely free to call your buddies on Skype via WiFi, and free on 3G until the end of 2010. Isn't it great? This is a must-have application for all.

iTouch App: Promodoro

 Promodoro is a time management application based on the Pomodoro technique. This technique allows you to get the most out of time management. Turn time into a valuable ally to accomplish what you want to do and chart continuous improvement in the way you do it.

iTouch App: Opera Mini

 Get a fast, cost-efficient Web browsing experience. Use the powerful servers of Opera to compress data by up to 90% before sending it to your iTouch, so page-loads are lightning fast. Opera Mini is a breeze to use and can synchronize data between your phone and computer.

Trust me, it's really lightning fast.

iTouch App: Money Book

It may look simplistic, but MoneyBook is a powerful personal finance app that offers unique features in an award-winning, easy-to-use user interface.

iTouch App: Today Todo Pro

 This application easily manages all your tasks. No unnecessary buttons, no myriad of taps to add a simple task. A sweat-free application. Don't be fooled by Today's appearance, it looks plain simple yet it offers many features. There is also a built-in web server that allows you to manage your tasks from your computer!

iTouch App: Pi Cubed

 Pi Cubed is a visual math application intentionally designed for a touch-based interface. Unlike the usual calculators, Pi Cubed has rich features especially the natural display and wide range of operations and formulas that will let you love it. You can also save your own formulas for future use. A diverse range of mathematical operations are supported, including logarithms, trigonometric functions, arbitrary roots, exponents, and factorials.

I personally use and like this useful application. I am able to save and export my own formulas and all are always with me wherever I go. This is a must-have application.