Android integration with Mac OS X Is there a way to connect Android phone with OS X Yosemite, just like (or similar) iOS does? Apple - OS X Yosemite - Mac + iOS Continuity.

I'm aware of AirDroid | Delight Your Multi-Screen Life, but I'm looking for other alternatives...
For Calendar, Contact  data and other iTunes sync features are supported by AirDroid as suggested in this Android Authority article :Using Android with Mac OS X: tips and recommendations   

For calls, SMS and other notifications try Pushbullet.