Houserefer.com offer a search facility where anyone in the world who has uploaded their property for sale rent etc can search for free.
For anyone wishing to sell or rent out their place anywhere in the world, they can register and upload as much or as little information as they wish.
The property can be toggled on or off (visibly) so that if a landlord has 100 properties on the site and they have changes of tenants, the property can be toggled to display only when the landlord is looking for more tenants.
This tends to save a load of time!
It is free to use by anyone. It has a simple and easy to use interface and is quite Google like in its initial fuss free search of properties.
you can even search by using the map facility, where all the properties show wherever they are in the world.
So, take a recommended peek today.
http://www.houserefer.com