I use middle-click all the time to open Safari windows in new tabs. Is there a way to enable a middle-click equivalent with the Magic Mouse?
Try this software: middleclick
Works really well for me on my 2 year old G5 running 10.5.
MagicPrefs seems not to work with the new Apple Magic Mouse 2 (MLA02LL/A), when you try to customize the behavior of it, it shows a message indicating that the magic mouse was not detected.
BetterTouchTool was the winner in my case, working on OS "El Capitan".
I use expogesture on my Magic Mouse as I had missed expose, and the extra buttons mighty mouse had greatly. You can designate "mouse gestures" and assign the Function keys (or any mapped keys really). Works on Snow Leopard using the 10.4 download. Just make sure your expose/dashboard/show desktop shortcut keys are mapped in system preferences. I have the clockwise swipe assigned as "show all windows" and counter-clockwise swipe assigned as "show desktop". Kinda like a "wax on, wax off" type of thing. Hope that helps!
Middle is a single-purpose app for adding the middle click to macOS for Magic Mouse and Apple trackpads. You can pick from a few gestures for each device, or hold the fn key and left click for a middle click. (I'm the developer, and the app is not free)
Multitouch is an app for adding trackpad and Magic Mouse gestures to macOS, and middle clicking is one of the available actions that can be tied to a gesture. (I'm the developer, and the app is not free)
and assign the new "middle click" to Expose or whatever function you'd like to have.
I use BetterTouchTool (a 64bit app), and have middle click configured as a two finger tap, works extremely well and feels natural in Safari. The others I have are: Show Desktop - three finger tap Application switcher - single finger middle tap Spaces - single finger middle click Expose - three finger click
That's the main things I want, and they all work extremely well, hardly any false readings, no lag.