.key

File Type 1 Generic IconSecurity Key
File Format Standard
Usage Open manually; may run a program or script when opened
Rank ★ ★ ☆  Average
Description

Contains registration information or a security code for a software program; often created when the program is registered; typically stored in the program's application folder or the system preferences folder.

Open With
Windows

IconVarious programs that save registration ...

macOS

IconVarious programs that save registration ...

Updated February 12, 2007
File Type 2 Keynote Presentation IconKeynote Presentation
File Format Proprietary (Apple)
Usage Referenced by an application; not meant to be opened manually; may run a program or script when opened
Rank ★ ★ ★  Common
Description

A Keynote KEY file is a presentation comprised of a series of slides. Slides can include both text and images and may also contain animations and special effects. Custom transitions may also be placed between each slide.

Info About Apple Keynote

Keynote is a presentation program developed by Apple. It enables users to create clean and attractive presentations using templates or custom slide designs. The program includes several built-in animations and effects and provides several different ways to deliver presentations. Keynote can be used to create many types of presentations, including family slideshows, lecture slides, and business presentations.

Keynote is part of Apple's iWork suite, along with Pages and Numbers.

Open With
macOS

IconApple Keynote

Updated August 20, 2009
File Type 3 Generic IconKeyboard Definition File
File Format Standard
Usage Referenced by an application; not meant to be opened manually
Rank ★ ☆ ☆  Uncommon
Description

Defines keyboard shortcuts or keyboard layouts for different languages; maps keys to different characters for different languages; stores custom keyboard shortcuts for some programs; used by operating systems for keyboard layouts.

Open With
Windows

IconSoftware Entire Connection

IconPrograms that support custom keyboard shortcuts

macOS

IconPrograms that support custom keyboard shortcuts

Updated 2007
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