OnyX
Free French Mac maintenance utility, released for every macOS version since 2003
Quick Overview
| Company | Titanium Software |
|---|---|
| Category | PC Optimization Software Alternatives |
| Headquarters | France |
| Founded | 2003 |
| EU Presence | France (no registered company found) |
| Data Location | Runs locally on your Mac |
| Open Source | No |
| Pricing | Free (donations) |
| Free Option | Free |
| Replaces | IObit MacBooster |
Detailed Review
OnyX has been published by Titanium Software in France since 2003 and is free, supported by donations. It verifies the structure of the system files, runs cleaning and maintenance tasks, deletes caches, rebuilds databases and indexes, uninstalls applications, and exposes settings in the Finder, Dock, Safari and other Apple apps that would otherwise need the command line. A separate version is released for each macOS version, including macOS 27 in September 2026.
It is a technical tool and makes no attempt to look like a consumer app. It also has no company behind it that we could find: the privacy policy names a person and the French regulator, but no registered entity. With no account, no licence server and no subscription, there is also very little to hold.
What OnyX does well
- Completely free
- No account and no licence server
- Released for each new macOS version
- Runs the maintenance macOS hides
Where OnyX falls short
- Technical interface aimed at experienced users
- No registered company found behind it
- No malware scan or duplicate finder like CleanMyMac
Standout feature. Free, account-free Mac maintenance that has been kept current with every macOS release since 2003.
Pros and Cons
Pros
- Completely free
- No account and no licence server
- Released for each new macOS version
- Runs the maintenance macOS hides
Cons
- Technical interface aimed at experienced users
- No registered company found behind it
- No malware scan or duplicate finder like CleanMyMac
Alternatives to OnyX
Frequently Asked Questions
What is OnyX?
OnyX has been published by Titanium Software in France since 2003 and is free, supported by donations. It verifies the structure of the system files, runs cleaning and maintenance tasks, deletes caches, rebuilds databases and indexes, uninstalls applications, and exposes settings in the Finder, Dock, Safari and other Apple apps that would otherwise need the command line. A separate version is released for each macOS version, including macOS 27 in September 2026.
Where is OnyX based?
OnyX operates from France, which places it under France (no registered company found).
What does OnyX cost?
Free (donations). Free.
Who is OnyX best for?
Mac users comfortable with a technical tool who want to pay nothing. Free, account-free Mac maintenance that has been kept current with every macOS release since 2003.
What are the drawbacks of OnyX?
Technical interface aimed at experienced users. No registered company found behind it. No malware scan or duplicate finder like CleanMyMac.