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Mergen for Mac

CIS benchmark security audit tool that checks 85 controls and auto-fixes most failures.

By sametsazak. Free and open source, MIT licence.

Get it with OpenDMG View source on GitHub

Mergen at a glance

Version
2.3
Released
22 April 2026
Download size
1.7 MB
Works on
Apple silicon and Intel
Licence
MIT
Category
Security and Privacy
Developer
sametsazak
GitHub stars
249

About Mergen

Mergen is an open-source, native macOS application for auditing and checking the security of your MacOS.

Screenshots

Mergen screenshot 1Mergen screenshot 2Mergen screenshot 3Mergen screenshot 4

How to install Mergen on a Mac

  1. Get OpenDMG. It is a free app store for open source Mac apps. Download OpenDMG.
  2. Search for Mergen and press Get. OpenDMG downloads version 2.3 from sametsazak's own GitHub release.
  3. Open it. The download is checked against its SHA-256 fingerprint and its signature is checked on your Mac before it lands in Applications.

Updates to Mergen show up in OpenDMG and install with one button. No account is needed.

Prefer to do it by hand? The developer's file is on GitHub: Mergen-2.3.dmg (1.7 MB).

What is new in Mergen 2.3

## What's Changed
* 👷 chore(ci): add CI + tag-driven release workflows by @qveys in https://github.com/sametsazak/mergen/pull/27
* 🔖 chore(release): bump MARKETING_VERSION to 2.1 and build to 3 by @qveys in https://github.com/sametsazak/mergen/pull/20
* 🐛 fix(check): detect Location Services via launchctl print on macOS 26 Tahoe by @qveys in https://github.com/sametsazak/mergen/pull/21
* 🐛 fix(report): truncate JSON file on export instead of appending by @qveys in https://github.com/sametsazak/mergen/pull/22
* 🐛 fix(check): treat absent Bluetooth Sharing key as disabled default by @qveys in https://github.com/sametsazak/mergen/pull/23
* 🐛 fix(check): read DiagnosticMessagesHistory plist for 2.6.3.1 and 2.6.3.4 by @qveys in https://github.com/sametsazak/mergen/pull/24
* 🐛 fix(check): parse pwpolicy's .{N,} regex form for CIS 5.2.2 by @qveys in https://github.com/sametsazak/mergen/pull/25
* 🐛 fix(check): convert Safari 6.3.3/6.3.4/6.3.6/6.3.10 to manual warnings by @qveys in https://github.com/sametsazak/mergen/pull/26

## New Contributors
* @qveys made their first contribution in https://github.com/sametsazak/mergen/pull/27

**Full Changelog**: https://github.com/sametsazak/mergen/compare/v2.2...v2.3

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