Pages for renting a flat directly with the owners (Frankfurt)

Hi there,

I will be arriving in Frankfurt the 1st week of September and I am starting to look for muy future house.

Most of the offers I find in internet are through agencies that ask for mínimum 2 months of rent as their fee.

Can someone help me with web pages that proposed flat rentals contacting directly the owners? I will be really thankful is there is a way to avoid the agencies and sabe that money