An MLS or also called Multiple Listing Service is a local or regional property listing database that aims to make real estate transactions efficient and faster. It’s a search engine portal for available homes for sale with several services and tools to help real estate brokers and agents find properties, view home data, and also build a network with other clients. Most of these MLS will also help list your property to Realtor.com, Zillow, Redfin, Trulia, and other real estate brokerages. For Sale By Owner, home sellers who don’t rely on a realtor, usually choose a Flat Fee MLS service. It’s usually a real estate listing package that lets you list your home on the MLS without having to pay the full commission fee (5 to 6% of sales price). FSBO sellers are now ditching the traditional service of hiring a realtor to do the overall selling process. Using a Flat Fee MLS saves them thousands of commissions while also having full control of the sale.