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OnyX is an app for the Apple Mac with which non-obvious functions of the system and individual programs can be used and changed. The free application from Titanium Software is available for different versions of the operating system from Mac OS X 10.2 to macOS 10.13 (High Sierra). At Apfelot, OnyX is used to change hidden settings on the Mac and to use a few little things for experts, such as clearing the DNS cache at the push of a button. In the following you will find more information, screenshots and the download.
Tip: I use for system maintenance and hard disk cleaning Clean My Mac
The free OnyX app from Titanium Software offers useful setup options on the Apple Mac without registration and without harmful or annoying additional software. Whether settings and optimizations with regard to the file system, settings for effects, appearance and other behavior of individual applications or access to system aids such as memory management, network utility and color picker - there are many practical steps possible to use the Mac and your workflow on the machine can optimize. Even if it gets slower due to age, you can deactivate various effects and other unnecessary settings with OnyX in order to free up system performance.
You can find the download of the app at titanium-software.fr/en/onyx.html - Everything is described there in English and you can only switch to French, but once you have downloaded OnyX, it can automatically also be used in German. The size of the download also varies depending on the operating system from macOS X 10.2 (OnyX 1.3.1) to macOS 10.13 High Sierra (OnyX 3.4.4). The first version measures only 1,2 MB while for example version 3.1.9 for Mac OS X 10.11 El Capitan is 33,1 MB.
Since OnyX accesses numerous functions and options of the operating system, the appropriate administrator rights are required. Despite the fact that the application itself can be used in German, the installation help is only available in English. Therefore, here are the corresponding instructions as a translation (procedure after installation):
Update April 2021: In newer versions of macOS and OnyX, the assignment of rights is a little different. If you have selected the "Security" overview in the system settings, click on the "Data protection" tab (instead of privacy) and then on "Full hard disk access" in the overview on the left. There you can check the box for OnyX (after you have opened the lock at the bottom left by entering a password). I wish you success! :)
Here are a few impressions of the program and the possibilities it offers (used under High Sierra):
Jens has been running the blog since 2012. He appears as Sir Apfelot for his readers and helps them with problems of a technical nature. In his free time he drives electric unicycles, takes photos (preferably with his iPhone, of course), climbs around in the Hessian mountains or hikes with the family. His articles deal with Apple products, news from the world of drones or solutions for current bugs.