• Metro List Express (MLX) - A locator service; includes apartments primarily in Manhattan. The search engine provides a range of selection variables (price range, community location, number of bedrooms, fees) to narrow your search. Also offers community descriptions and other info. Registration is required to search, with free and "premium" sign-up levels.

• Apartment Source - This site requires registration to use its locator service. In return for a varying fee, you may search their website and automatically receive e-mail listings of apartments.

• CityRealty.Com - Free locator service; lists apartments throughout city. You must register (registration is free) and then the search engine on their apartment directory asks you to select a price range, neighborhood in Manhattan, and number of bedrooms. Website also has information on neighborhoods and apartment-hunting tips.

• Easy Rent - This site provides listings for a fee in New York and other cities.

• Halstead - A New York City real estate broker, with only Manhattan and Brooklyn apartments for sale and rent.

• Corcoran - A New York City real estate broker offering apartments in Manhattan, Brooklyn, and eastern LI. Features neighborhood guides and advice for finding an apartment.

• CraigsList - Online listings of apartments (with and without fees), sublets, and shares, as well as many other things in NYC and elsewhere.

• TurfNYC.com - On-line real estate agent.

• UrbanHabitat.net - Licensed real estate broker.

• MatchRealtyNycApts.com - Licensed real estate broker.

• Citirent.com - This apartment locator service provides apartment rental listings in Manhattan for a fee of $0.99 per apartment listing you request contact information for. Search Manhattan listings by price, size, and neighborhood.