Corporate Choices
   Free subscription printed directory of international interim/short-term housing.
   http://www.corporatechoices.com

EcoRoommates.com
   Roommate finder and sublet service for people who are vegetarian, vegan, Adventist, rawfood, macrobiotic.
   http://www.ecoroommates.com/

Landlord Business Solutions
   Offers billing, collections, tenant screening, cleaning, and property management services.
   http://www.landlordbusinesssolutions.com

PadMapper
   PadMapper is a map-based search engine for apartment rentals. It has fast rent, bedroom, bathroom, and other filters to quickly narrow down to just the listings one is interested in. 100k+ listings in New York, Boston, and thousands of other cities.
   http://www.padmapper.com

Relocation Apartments
   Offers listings of apartments for rent, corporate housing, and relocation services world-wide.
   http://www.relocationapartments.com

Relocation Central
   Provides help finding apartments, rental furniture, and utility hookups nationwide.
   http://www.relocationcentral.com/

RentSeeker.ca: Apartment Search Site
   Directory of professionally managed apartments for rent includes details, photos, videos, floor plans and company profiles.
   http://www.rentseeker.ca

SuiteNet
   Directory of corporate temporary housing providers offering furnished apartments for short and long term rentals.
   http://www.suitenet.org