BlueStacks

BlueStacks screenshots

Install and use your favorite Android apps from your Mac.
Configuring Google Account Settings
BlueStacks 2.0 : Configuring Google Account Settings

Alternative downloads

CrossOver Games
10.3
CrossOver Games has been discontinued & rolled into CrossOver 11 CrossOver Games...
Xamarin Android Player
0.6.5
FREE
Rapidly demo and test app builds.
iStonsoft Android File Manager
2.5.219
Backs up and restores Android phone data on Mac with one click.