Brokers  These services offer to list your site for a commission.

They handle everything, including the escrow service.  Some even advertise your site.

AllForDomains.com Listers (Free) These are some great places to list your names.   The problem with free listings is there are too many listings and people tend to list everything they have whether the names are any good or not.  Buyer don't like having to sift through thousands (or millions) of names every day trying to find a good one.  The listers may have other great products and services also.

Domain Name Classifieds 

Listers (Fee)  These sites (similar to this one) charge a small, one time fee (usually for one year) to list your quality domain names.  Some even feature in a showcase so there are even less names to go through for the buyers.   Much of the fee for this site goes for advertising and search engine positioning so your names get maximum exposure. One time fee until name is sold or no longer registered.

Pawn your names

Sellers These sites only sell their own names and don't list other peoples names. 

Domain $eller$          

SpecialNames 

Name Castle   

Buyers

Rip-Offs