Apple added 10-bit colour to the Apple Display drivers this is causing issues with older Macs including the Mac-Mini this little application can fix it by allowing you to select 8-bit from the list.
ResXtreme provides access to all display modes for each connected screen, including extended and HiDPI modes accessible only via private system APIs. These private modes are not normally accessible to App Store apps.
ExactMouse acceleration killer:
ExactMouse from Steelseries removes mouse acceleration on the Mac.
Acceleration is a a problem for me when using a mouse on any computer that requires precise pointer placement. It is not easy to disable it completely on the Mac without using some fancy terminal command.
To make it easy to disable acceleration either term-rally or permanently you can use the ExactMouse tool from Steelseries. The improvement in general mouse work are subtle but noticeable and improve the feel of high quality gaming mice.
Download from steelseries site.
For some reason Web Browsers such as Safari have added the ability for Web Sites to request the sending of Notifications using the OS notification system. Quite why anyone would want this on 99% of the sites is beyond me.
If you are fed up with constantly having to say no to these requests there is a way to turn off all requests in Safari, and certainly other browsers too.
To turn of the prompts go to:
Settings > Websites > Notifications
and deselect the check box at the bottom of the pane.