Apple sold more than 1 million copies of iPads in the first 3 months. This gadget is definitely more than just a larger version of iPhone or iPod touch. With 4x the screen of an iPhone, the iPad’s display is ideal for reading and for presentations.

In today’s post, we’d like to highlight some really useful iPad applications that might replace the things you do daily with your laptop or netbook. With a piece of iPad and these applications, you probably don’t need to carry a laptop around. Here are 30 useful iPad applications for Business and Presentation you might find handy on your next project pitch or business trip.

Full list after jump.

Presentations

Keynote
Keynote is the most powerful presentation app ever designed for a mobile device. It’s the application you know and love on the Mac, but completely reworked from the ground up for iPad.

Corkulous
Corkulous is incredible idea board for iPad to collect, organize, and share your ideas that feel completely natural.

Power Presenter
This application is used for Presentation. If you save the powerpoint as PDF file, this app will help you do the presentation on projector. It will automatically detect the projector and send the signal to theprojector using the VGA cable.

Sadun’s Whiteboard
Transform your iPad into a presentation screen with Whiteboard. Whiteboard lets you connect to a TV or projection system using an Apple VGA or composite/component video-out cable and draw directly to an external screen using standard whiteboard markers and erasers.

Graph, Charts, Diagram & Statistic

Analytics HD
The premier app for Google Analytics, Analytics App, now debuts on the iPad as Analytics HD! See charts and reports like you’ve never seen them before, and share them in a meeting with full screen charts!

OmniGraffle
Need to create a quick diagram, process chart, page layout, website wireframe, or graphic design? With OmniGraffle, your iPad touch screen is your canvas (or graph paper, or whiteboard, or cocktail napkin.

OmniGraphSketcher
Use OmniGraphSketcher for iPad to make elegant and precise graphs in seconds, whether you have specific data to report or a concept to explain.

Idea Boards
A simple easy way to put your ideas somewhere. Idea Boards right now offers 4 unique drawing surfaces.

Numbers
Numbers is the most innovative spreadsheet app ever designed for a mobile device. It’s the application you know and love for the Mac, completely reworked from the ground up for iPad. Tap the bright Multi-Touch display to create compelling, great-looking spreadsheets in minutes.

Easy Chart HD
Simple, Easy chart creator for iPad – EasyChart.

Instaviz
INSTAVIZ is diagram sketching for your iPhone. Sketch some rough shapes and lines and Instaviz magically turns them into beautifully laid-out diagrams.

Roambi – Visualizer
Roambi’s cutting edge mobile dashboards let you touch, turn, analyze and share your company’s latest information on any iPhone or iPad – keeping you connected to your business, anytime and anywhere.

Planning

Priority Matrix
Priority Matrix is an incredibly convenient and powerful “to do list” tool that uses proven time management methods. You can visually and intuitively manage to do items, lists, ideas, project, plans, and activities.

iThoughtsHD (Free/Paid App)
iThoughtsHD is a mind mapping tool for the iPad. Mindmapping enables you to visually organise your thoughts, ideas and information.

Page & Documents

Pages
Pages is the most beautiful word processing app ever designed for a mobile device. It’s the application you know and love for the Mac, completely reworked from the ground up for iPad.

Dropbox
Dropbox is the easiest way to sync and share your files online and across computers.

FTP On The Go PRO
An FTP client for the iPad, iPhone, and iPod touch. View and edit HTML/CSS/JS/PHP/ASP, or other files on your server with its built in editor to change your website from anywhere. View images and documents (JPG, PDF, DOC, XLS, PPT, etc) too.

SugarSync
All of your data at your fingertips…anytime, anywhere, from your iPad. With SugarSync, instantly access cloud-synced files, photos and music from all your computers. View files and photos, stream music, and share files (and even complete folders) with friends and colleagues – no tethering required.

Dragon Dictation
Dragon Dictation is an easy-to-use voice recognition application powered by Dragon NaturallySpeaking that allows you to easily speak and instantly see your text or email messages. In fact, it’s up to five (5) times faster than typing on the keyboard.

The Wall Street Journal (Free)
Experience The Wall Street Journal’s award winning coverage, blending the best of print and online. Touch the stories that matter to you most, get latest news updates and market data throughout the day, and save your favorite articles and sections for later.

PrintCentral
Print direct to most WiFi printers, or to ALL printers and ANY document type via your Mac/PC, even over 3G. View, store & print email, attachments, documents, files, photos, contacts, web pages and copied items from other Apps, on your iPad.

Meetings

MightyMeeting
With MightyMeeting you can store your presentations in the cloud and access them anytime and anyplace from your iPhone or iPad. You can share these presentations via email, blog, Twitter, or Facebook. Most importantly, you can start or join online web meetings directly from your iPad or iPhone.

WebEx
Attend WebEx meetings on your iPad, wherever you are! Use this application to get the full meeting experience with simultaneous data and audio. Don’t just listen in to a meeting. Join in.

GoToMeeting
GoToMeeting is the easiest and most convenient way to attend online meetings – and now you can take it to go! Download the free app and join a meeting on your iPad in seconds just by tapping the link in your invitation email. View slide presentations, design mockups, spreadsheets, reports – whatever meeting presenters choose to share on-screen.

iMeetingPad
iMeetingPad replaces the standard notepad you used to bring to meetings before the iPad era dawned. Does your notepad connect to the projector? Can your notepad bring the applause or laugh track? Can it wake dozing colleagues with a cock crow? iMeetingPad can!

Skype
Call your Skype contacts wherever you may be – either on 3G or WiFi. It’s completely free to call people on Skype over Wifi and free on 3G until the end of 2010.

Sketching & Designs

SketchyPad
This app will make designers, programmers, interface designers life much easier. Easy-to-use interface and a lot of various stencils will help you to mockup any web sites and apps interfaces.

iMockups
Mockups provides designers and developers with the ability to quickly draft wireframes for their websites and iPhone/iPad apps. Created exclusively for the iPad, iMockups combines a beautiful interface with intuitive functionality, taking full advantage of the breakthrough touchscreen device.

Doodle Buddy
Doodle Buddy for iPad is the most fun you can have with your finger—-heck, it’s the most fun you can have with two, three or four fingers! Finger paint with thousands of colors and drop in playful stamps.

Layers – Pro Edition
Want to doodle, draw on photos, or paint a masterpiece on your new iPad? Look no further! Layers packs in everything you need to be creative on the go. The pro edition of Layers provides more brushes, more layers, and more advanced layer operations than the standard edition.

By Joe Kissell,

You can give impressive presentations from your iPad‚ and perhaps even leave your laptop behind‚ if you prepare well and know what to expect. It’s even easier to take to the podium with newer technologies like AirPlay mirroring and the latest version of Keynote for iOS. Here are tips for moving presentations onto your iPad and delivering them live.

Get it together

Apple’s $10 Keynote for iOS  can import presentations made in Microsoft PowerPoint  or in Keynote for OS X , but in both cases you’re likely to lose a great deal during the import process. Say goodbye to some fonts, transitions, and builds that aren’t available on the iPad, plus audio and more. (Presenter notes are supported, however, whether created on the iPad or imported from a PowerPoint or Keynote for Mac presentation.) Therefore, when feasible, create your presentation directly on the iPad.

If you do use Keynote on a Mac, be sure to read Apple’s Best practices for creating a presentation on a Mac for use on an iPad, which guides you in selecting compatible templates, fonts, and other features. Once you’ve created your presentation, you need to move it to your iPad. Although the iOS version of Keynote supports iCloud’s Documents in the Cloud feature, which automatically syncs documents on all your iOS devices with Apple’s servers, the Mac version of Keynote still lacks integrated support for this feature. (OS X 10.8 Mountain Lion will have access to iCloud’s Documents in the Cloud.)

Instead, you must log in to your iCloud account in a Web browser at www.icloud.com, click the iWork icon, click Keynote, and then drag your Keynote document into the browser window. After it uploads, the document will appear automatically in Keynote on your iOS device—but keep in mind that this process doesn’t eliminate the compatibility issues I mentioned a moment ago.

If you don’t use iCloud, another way to move the presentation onto your iPad is to open iTunes, select your iPad, click on the Apps tab, and select Keynote. Drag your presentation to the Keynote Documents list. Then open Keynote on your iPad, go to the Document Manager (if it’s not already visible), tap the folder icon in the upper-right corner, and then tap your presentation. Or, if you want the convenience of cloud-based syncing without iCloud, a service called DropDAV ($5 per month) enables Keynote users to connect to Dropbox ( ) via WebDAV.

One note: If you’ve already created a presentation in PowerPoint, also take a look at SlideShark, a free iPad app for viewing and displaying PowerPoint presentations. It’s not perfect, but it does a better job supporting PowerPoint documents than any other iPad app I’ve seen.

Use an external display

If your audience is very small—perhaps you’re showing your portfolio to a potential client or giving your boss a quick demo—you could show your presentation on the iPad itself, albeit without the presenter notes. But you’re more likely to prefer using a projector or other display.

Plug it in One way to do this is to plug a video adapter into your iPad’s Dock connector, and then connect that to your display. You’ll get the best results (and the highest resolution) using a display or projector with either the $39 Apple Digital AV Adapter (for displays with HDMI inputs) or the $29 Apple VGA Adapter (for displays with VGA inputs).

If you’re connecting to a television with neither HDMI nor VGA inputs, you can instead use the $39 Apple Component AV Cable or the $39 Apple Composite AV Cable, as appropriate, although both offer lower resolution than the Digital AV and VGA adapters. Although this wired approach works just fine, it’s difficult to hold your iPad while giving a presentation without the video cable falling out—I speak from personal experience.

Mirror a newer iPad With an iPad 2 or later, either the Digital AV or VGA adapter lets your iPad mirror everything from its internal screen onto the external display, which may be useful if you want your presentation to include demonstrations of other iPad apps or content that’s not within Keynote itself. However, note that on the original iPad, where mirroring is unavailable, Keynote itself produces no external video signal until you tap the Play button (which is probably what you want anyway).

If you prefer to roam across the stage holding your iPad while you speak, you can beam your presentation’s audio and video wirelessly using AirPlay mirroring—provided you have an iPad 2 or later running at least iOS 5. To pull off this trick, you’ll need an AirPlay receiver connected to the projector or display and on the same Wi-Fi network as your iPad. Apple’s $99 Apple TV ( ) can serve this purpose, if you happen to have one handy. Alternatively, assuming a Mac or PC is available, you can install either of two similar utilities: AirServer (Mac version, $15; Windows version, $8) or Squirrels’ Reflection (Mac only, $15). Either of these apps can turn a computer into an AirPlay receiver, no Apple TV required. They even support displaying screens from multiple iOS devices at the same time. Note that the PC version of AirServer currently lacks audio support, but the developer says it’s “coming soon.”

Once your AirPlay receiver is set up, you can mirror your iPad’s display by double-pressing the Home button, swiping the multitasking bar toward the right, and tapping the AirPlay button. Tap the name of the device you want to use for mirroring and then set the Mirroring switch to On.

Control the presentation

Once you tap Play, you can use your iPad to control the presentation as well as provide presenter notes for yourself (a cheat sheet, if you will) that the audience won’t see. To change what’s on the iPad’s screen when using an external display, tap the Layouts icon and then one of the follow buttons: Current (the current build of the slide as shown on the external display), Next (the next build, which may or may not be the next slide), Current and Next (current and next builds side by side), or Current and Notes (current build and any accompanying presenter notes). This final layout is the only one to display presenter notes, but you can supplement it by tapping the button in the upper left corner to display a list of slide thumbnails, which can aid in navigation (tap a thumbnail to jump directly to that slide).

To advance to the next build or slide, tap once anywhere, or swipe toward the left. To go back, swipe toward the right. A nice extra in Keynote for the iPad is a “laser pointer”: Touch and hold on the iPad’s screen to show a red dot, which moves with your finger on the main display. Lift your finger and the dot disappears. This is useful when you want to call attention to a particular area of a slide. To end the presentation (and turn off Keynote’s video output), tap the Close icon.

If your iPad is physically connected to your display—or if you want to be able to move around during your presentation without carrying the iPad with you—you can download Apple’s Keynote Remote app ($1) on your iPhone or iPod touch. Follow the instructions to pair Keynote Remote with your iPad using Wi-Fi or Bluetooth, and then your iPhone or iPod touch becomes a remote control for Keynote on your iPad, complete with previews of your slides.

When you create a Keynote presentation on your Mac that you intend to share to an iPad, your presentations will look their best if you follow the recommendations below.