You can find flat offerings at
www.homegate.ch
There is also a tax calculator when you go to the individual apartments.
From there, you can get an idea of which areas are good from a tax standpoint. Each community has a different tax rate within a canton.
It is still hard for me to believe, but yes, it is true.
There are large expat communities in Adliswil, Thalwil, Horgen... and of course Zürich.
Good luck!