Security Tools

28 apps

Security tools for macOS focus on visibility and control: outbound firewalls, persistence monitors, camera and microphone alerts and code signature checks. They add a layer on top of Gatekeeper and XProtect, mostly by showing what software is doing so you can decide whether to allow it.

Several of the best known come from Objective-See and are free and open source: the LuLu firewall, BlockBlock for monitoring persistent installs, KnockKnock for listing persistent software, OverSight for camera and mic alerts, and What's Your Sign? for checking signatures. Santa is a binary allowlisting tool aimed at managed fleets. Expect approval prompts for system extensions.

Antivirus Onecleanerone.trendmicro.comSecurity scanner for malware, adware, and web threats.FreeApp StoreBlockBlockobjective-see.com861Me: "Please alert me whenever anything is persistently installed." BlockBlock: "You got it"Open sourceupdated 1mo agoCClearanceKitcraigjbass.github.io44Policy-based file access control tool for protected paths.Open sourceNativeupdated todayDylib Hijack Scannerobjective-see.com128Utility for scanning apps vulnerable to dylib hijacking.Open sourceFreeupdated 1y agofobgetfob.app24Menu bar SSH agent that keeps keys in the Secure Enclave and gates every use behind Touch ID.Open sourceFreeupdated 24d agoKextViewerobjective-see.com92View all modules on that are loaded in the OS kernel.Open sourceupdated 3y agoKnockKnockobjective-see.com815See what's persistently installed on your Mac.Open sourceupdated 1mo agoLLinkLiarhalo.github.io1.5kLink-Layer MAC spoofing GUI for macOS.Open sourceFreeupdated 1y agoLockDownobjective-see.comOpen-source tool for El Capitan that audits and remediates security configuration settings.Open sourceFreeLockpawgetlockpaw.com164Menu bar screen guard for macOS — lock and unlock your screen with a hotkey.Open sourceFreeupdated todayMakLockdutkiewiczmaciej/MakLock147Lock any macOS app with Touch ID, Apple Watch proximity, or password. Full-screen blur overlay on all monitors.Open sourceFreeupdated 6mo agoLuLuobjective-see.com13.3kLuLu is the free macOS firewall that aims to block unauthorized (outgoing) network traffic.Open sourceFreeupdated 12d agoMalwareBytesmalwarebytes.comMalware scanner and removal tool.FreeMMana Securitymanasecurity.com28vulnerability management app for individuals.Open sourceupdated 3y agoVulertvulert.comDependency vulnerability monitoring service for open-source packages.NoxKeyNo-Box-Dev/NoxkeyKeychain-based secret manager for API keys and tokens with Touch ID.Open sourceFreeOverSightobjective-see.com682Tool for monitoring microphone and webcam access.Open sourceFreeupdated 2y agoParetoSecurityparetosecurity.com458A MenuBar app to automatically audit your Mac for basic security hygiene.Open sourceupdated 10d agoPureSnitchmomenbasel/puresnitch175Open-source application firewall with a Little Snitch-style world map, rule manager, DNS over HTTPS, and pf-based blocking, with no telemetry.Open sourceFreeupdated 8d agoRansomWhere?objective-see.com132Generic Ransomware Detection.Open sourceupdated 1mo agoSantanorthpole.security833Binary and file access authorization system.Open sourceNativeupdated todaySentinelsentinel-james-murphy.pages.devPlain-language Mac security-settings check with a Wi-Fi device list.Freestrongholdalichtman/stronghold1.2kEasily configure MacOS security settings from the terminal.Open sourceFreeupdated 1y agoSuspicious Packagemothersruin.comAn application for inspecting macOS installer packages.FreeswiftGuardLennolium/swiftGuard470Tool for protecting USB ports from unauthorized access.Open sourceFreeupdated 1y agoTaskExplorerobjective-see.com174Explore all processes running on your Mac with TaskExplorer.Open sourceupdated 9d agoTouchBridgeHMAKT99/UnTouchID323Authenticate with your phone's fingerprint as a free Touch ID keyboard alternative.Open sourceFreeupdated 2mo agoWhat's Your Sign?objective-see.com366Finder extension for viewing a file's code-signing information.Open sourceFreeupdated 6mo ago

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About Synced Oct 16, 2026

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