- Fraunhofer-Gesellschaft
- http://www.fraunhofer.de/fhg/EN/
- Fraunhofer Institute for Building Physics (IBP)-English
- http://www.ibp.fraunhofer.de/index_e.html
- Fraunhofer Institute for Building Physics (IBP)(Japan Bau)-Deutsche
- http://www.japanbau.de/index_d.html
- WUFI-ORNL:Oak Ridge National Laboratory
- http://www.ornl.gov/sci/btc/apps/moisture/index.html
- National Building Science Corporation
- http://www.section08.com/wufi.html