(Translated by https://www.hiragana.jp/)
Apple - Launchpad - Instant access to all your apps.
The Wayback Machine - https://web.archive.org/web/20110609033404/http://www.apple.com:80/macosx/whats-new/launchpad.html

Launchpad

A home for your apps.

Say goodbye to hunting for the app you need in an applications folder. Launchpad gives you instant access to all your apps.

Prepare to launch.

Click the Launchpad icon in your Dock and your open windows fade away, replaced by a full-screen view of all the apps on your Mac. Each app is represented by an icon, and Launchpad creates as many pages of app icons as you need. Swipe across your trackpad to move between pages. And open any app with a click.

Customize your Launchpad.

Arrange apps in Launchpad any way you like by dragging icons to different locations or by grouping apps in folders. Simply drag one icon over another to create a folder. Launchpad even suggests a name for the folder based on the category of the apps inside it. Or you can name the folder whatever you like.

From download to launch in seconds.

When you download an app from the Mac App Store, it automatically appears in Launchpad, ready to blast off. If you want to access favorite apps more quickly, drag their icons from Launchpad to the Dock. Want to delete an app you got from the Mac App Store? Just hold down the icon until it starts to jiggle, then click the X in the corner. Deleting a Mac App Store app in Launchpad removes it from your system. But if you delete an app by mistake, you can get it back by downloading it again for free from the Mac App Store.*

*Apps can be downloaded again as long as they are available on the Mac App Store. Application availability is subject to change.