| KCE-Thermodynamics | www.kce-thermodynamics.com |
| KCE-ThermoFluidProperties | www.thermofluidprop.com |
| Kretschmar Consulting Engineers | www.kretzschmar-consulting-engineers.com |
| Stoffwert-Bibliotheken | www.thermodynamic-property-libraries.com |
| Steam Properties Calculator | www.steam-properties-calculator.com |
| Fluid Property Calculator | www.fluid-property-calculator.com/ |
| Prof. Dr.-Ing. habil. Hans-Joachim Kretzschmar | www.technische-thermodynamik.de |
| Formelsammlung Thermodynamik | www.thermodynamik-formelsammlung.de |
| International Steam Tables | www.international-steam-tables.com |
| Lernsystem Thermopr@ctice | www.thermopractice.de |
| Lernplattform OPAL | www.bildungsportal.sachsen.de/opal |
| Hochschule Zittau/Görlitz | www.hszg.de |
IAPWS, Deutsches Nationales Komitee | |
| ASHRAE | www.ashrae.org |