AfternicGoDaddy domain marketplace - listings syndicate to 100+ registrar partners so your domain surfaces wherever buyers search.
Fees 15% commission (25% off-network), min $15afternic.com
FlippaThe biggest marketplace for buying and selling websites, apps, and online businesses since 2009, with listing tiers plus a success fee.
Fees $29-99 listing fee + 5-15% success feeflippa.com
SedoOne of the world largest domain marketplaces, with millions of listings, auctions, and built-in escrow in 17 languages.
Fees 15% marketplace commissionsedo.com