CodeSigner
CodeSigner is a code signing utility for macOS developers, used to sign and validate application binaries and frameworks before distribution. It handles the cryptographic signing required by Apple's notarization and code-signing requirements, ensuring that applications meet security policies and can run on modern versions of macOS. Developers rely on code signing for app distribution via the Mac App Store, direct download, or enterprise deployment.
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1 suggestionCodeSigner has been discontinued by its developer and is no longer maintained. The RoaringApps database confirms it is marked as end-of-life with no ongoing support. Although the listing mentions a macOS version with a universal binary, the lack of active maintenance means no further updates are coming, and there is no guarantee the existing build runs reliably on current or future macOS releases. Since Apple is removing Rosetta 2 in macOS 28 (September 2028), you should plan to migrate to an actively maintained alternative. For most developers, Apple's built-in codesign command-line utility (part of Xcode Command Line Tools) handles all standard code-signing needs without requiring a separate GUI tool. If you specifically need a graphical interface for code signing workflows, consider Xcode itself (free from the App Store), which includes a native code-signing UI, or command-line tools like fastlane (actively maintained, open-source, runs natively on Apple Silicon). If you have custom code-signing scripts or workflows built around CodeSigner, you may be able to port them to codesign directly.
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