Sentinel
Sentinel configures macOS Gatekeeper, removes quarantine attributes, and self-signs apps; its project is on hold.
About Sentinel
Sentinel is a GUI tool for macOS that configures Gatekeeper, removes quarantine attributes from apps, and ad-hoc self-signs apps. It supports dropping an app to unquarantine it with optional auto-open, replacing certificates, and unquarantining from Finder.
It requires macOS 13 or later, including 26.x Tahoe; versions before 13.0 and beta releases are not supported. Development has been on hold since the end of 2025, with maintenance and new releases paused indefinitely.
Key features
- Configure Gatekeeper status through a graphical interface
- Drop an app to remove its quarantine attribute
- Optionally auto-open app after unquarantining
- Drop an app to ad-hoc self-sign and replace certificate
- Unquarantine apps from Finder context menu
- Auto-updater pulls release notes and binaries from GitHub Releases
Best for: Mac users who need to clear Gatekeeper quarantine flags and self-sign apps on supported macOS versions.
Good for
- Supports macOS 13 Ventura through 26.x Tahoe
- Distributed as pre-compiled releases and via Homebrew
- Includes Finder extension for unquarantining from the context menu
Watch out for
- Development on hold indefinitely since end of 2025 with no active maintenance
- Does not support macOS versions prior to 13.0
- Does not support beta macOS versions
Sentinel at a glance
- Category
- Software & Utilities › Linux & Mac Apps
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
Popular in Linux & Mac Apps
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Sentinel FAQ
Which macOS versions does Sentinel support?
13.x Ventura, 14.x Sonoma, 15.x Sequoia, and 26.x Tahoe are supported. Versions before 13.0 and beta versions are not supported.
How can Sentinel be installed?
Download pre-compiled versions from the releases page or install with brew install alienator88-sentinel. It should be run from the /Applications folder to avoid permission issues.
Is Sentinel still actively developed?
No. The maintainer states development stopped at the end of 2025, and issue responses, feature work, and releases are on hold indefinitely.
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