The LoopNet online marketplace contains more than $405 billion of property available for sale and 3.2 billion square feet of property available for lease. LoopNet covers all commercial real estate property categories including commercial land, office space, industrial, multifamily (apartments) and retail.

CoStar Group is the number one provider of commercial real estate information, marketing and analytic services available, including commercial real estate for sale, property for lease, verified comparable sales transactions, and tenant information.

CIE360 helps professionals share commercial real estate information in the Mid-Atlantic states. It's a database of commercial property listings & recent sale/lease comparables, and a tool for research, marketing, communicating & networking.

Property Lines's commercial property listing and marketing service works with commercial sale and lease brokers to close deals faster.