OpenDMG
Sentry icon

Sentry for Mac

Security monitor that alerts on activity while you're away.

By Lakr233. Free and open source, MIT licence.

Get it with OpenDMG View source on GitHub

Sentry at a glance

Version
1.3.13
Released
22 June 2025
Download size
3.0 MB
Works on
Apple silicon and Intel
Licence
MIT
Category
Security and Privacy
Developer
Lakr233
GitHub stars
347

About Sentry

A powerful macOS security monitoring application that detects unauthorized access attempts and records video evidence for you.

Screenshots

Sentry screenshot 1

How to install Sentry on a Mac

  1. Get OpenDMG. It is a free app store for open source Mac apps. Download OpenDMG.
  2. Search for Sentry and press Get. OpenDMG downloads version 1.3.13 from Lakr233'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 Sentry 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: Sentry-v1.3.13.zip (3.0 MB).

More Security and Privacy apps

All Security and Privacy apps