WebKit Open Source Web Browser Engine

WebKit for Web Developers

WebKit is the web browser engine used by Safari, App Store, and many other OS X, iOS, and Linux applications. Web developers can stay updated on feature support, follow development on the blog, try out the latest web technologies by downloading Safari Technology Preview and report bugs.

Contributing to WebKit

You can provide bug reductions or contribute code. Get started contributing code by installing developer tools and checking out and building the source code. Learn more about the project and our performance goals.

WebKit Open Source Web Browser Engine

WebKit for Web Developers

WebKit is the web browser engine used by Safari, App Store, and many other OS X, iOS, and Linux applications. Web developers can stay updated on feature support, follow development on the blog, try out the latest web technologies by downloading Safari Technology Preview and report bugs.

Contributing to WebKit

You can provide bug reductions or contribute code. Get started contributing code by installing developer tools and checking out and building the source code. Learn more about the project and our performance goals.
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ECMAScript 6 Proper Tail Calls in WebKit

Proper Tail Calls (PTC) is a new feature in the ECMAScript 6 language.

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Release Notes for Safari Technology Preview 4

Safari Technology Preview Release 4 is now available for download.

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Locking in WebKit

We recently replaced all spinlocks, OS-provided mutexes, and condition variables in WebKit with the new WTF::Lock and WTF::Condition — these new primitives have some cool properties.

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Release Notes for Safari Technology Preview 3

Safari Technology Preview Release 3 is now available for download.

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Updating Our Prefixing Policy

WebKit’s new feature policy is to implement experimental features unprefixed, behind a runtime flag.

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Release Notes for Safari Technology Preview 2

Safari Technology Preview Release 2 is now available for download.

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Introducing Safari Technology Preview

Starting today, there’s a new, convenient way to see what features and improvements are coming to Safari and other applications that use WebKit.

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