Comment by cerberusss

If you want to know how much non-Apple kernel extensions you use, use "kextstat" and filter out com.apple. In my case, I only use Karabiner:

  % kextstat | grep -v com.apple
  Index Refs Address            Size       Wired      Name (Version) UUID <Linked Against>
    185    0 0xffffff7f84cc0000 0x5000     0x5000     org.pqrs.driver.Karabiner.VirtualHIDDevice.v061000 (6.10.0) 4D004D1A-ED2F-3780-AD53-A10F286EC759 <51 6 5 3 1>
  %