Gatekeeper is a new feature in OS X Mountain Lion that helps protect users from downloading and installing malicious software. Signing your applications, plug-ins, and installer packages with a Developer ID certificate lets Gatekeeper verify that they are not known malware and have not been tampered with. Learn more about Gatekeeper
Essential Videos, Documentation, and Resources
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Gatekeeper and Developer ID
Get an overview of Gatekeeper and learn how to sign your Mac software with Developer ID.
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Building, Archiving, and Submitting Your App
Learn about using Xcode to sign your Mac application with Developer ID for distribution outside the Mac App Store.
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Distributing Outside the Mac App Store
Learn how to code sign software with a Developer ID certificate for distribution outside the Mac App Store.
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Code Signing Guide
Get an overview of code signing and read about common tasks and requirements for code signing OS X apps.
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Developer Certificate FAQs
Get answers to common questions about developer certificates.
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Apple Developer Forums
Discuss Gatekeeper with other Apple developers.
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Mac Developer Library
Find additional security related guides and technotes for OS X.
Mac Developer Program membership is required to access certain tools and resources for distributing Mac applications. Not a member? Learn more
