Airpak
- Offers software for modeling air flow, thermal transfer, and contaminant distribution in ventilation systems and other indoor environments. Includes online demonstration, contact information, and sample output.
- http://airpak.fluent.com/

ETV Indoor Air Products assessment
- U.S. EPA and the Research Triangle Institute pilot project to verify performance of indoor air quality products in three broad categories.
- http://www.epa.gov/etv/centers/center7.html

Indoor Environment Connections
- Offers information about a trade magazine for commercial, industrial, and institutional building owners providing data about indoor environmental issues.
- http://www.ieconnections.com/

Healthy Home and Workplace Pty. Ltd.
- Information about health issues relating to indoor living and working environments as well as safe housing and associated technologies.
- http://www.healthyhouse.com/

Clean Air Delivery Rate
- Explains this rating system for air cleaners and shows application examples. Also provides a tutorial about air cleaners.
- http://www.cadr.org/

AirQual
- Portal for commercial indoor environments industry to research products and services, as well as legislative issues.
- http://www.airqual.net