I just did some research for you and here are some programs.
Every local government agency regulates different housing program.s. Some are on city level but most states have a major housing authority that runs these programs. In Georgia, it's the Georgia Department of Community Affairs (DCA).
They have a loan program Georgia Dream. It's a special program that can be combined with different down payment assistance programs. They have a standard down payment assistnace program but also have special programs for disabled, a program for nurses/law enforcement/fire fighters and another program for buying a home in a flood revitalization area.
Here's a link to the Gorgia DCA website for homebuyer programs. Be sure to look for a lender who specializes in these.