Plug-in (computing)

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In computing, a plug-in (or plugin) is a set of software components that adds specific capabilities to a larger software application. If supported, plug-ins enable customizing the functionality of an application. For example, plug-ins are commonly used in web browsers to play video, scan for viruses, and display new file types. Well-known plug-ins examples include Adobe Flash Player and QuickTime.

Add-on is often considered the general term comprising snap-ins, plug-ins, extensions, and themes.[1]


Purpose and examples

Applications support plug-ins for many reasons. Some of the main reasons include:

Specific examples of applications and why they use plug-ins:

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