A Concise History of Thermodynamics
   An overview of the history/evolution of thermodynamics. This is an excerpt from a biography of J. Willard Gibbs. The overview is available from the site in MS Word or pdf/Acrobat format.
   http://www.thermohistory.com/

About Temperature
   A very basic (prepared for the middle school math teachers) tutorial but still useful for professionals.
   http://my.unidata.ucar.edu/content/staff/blynds/tmp.html

All Thermodynamics
   from HyperPhysics portal. This is rather a comprehensive online physics handbook containing "Thermodynamics" chapter. Site has a handle navigation, good illustrations, and very detail content.
   http://hyperphysics.phy-astr.gsu.edu/hbase/heacon.html#heacon

Applied Thermodynamics
   Definition and short explanations of terms, units and basic principles.
   http://www.taftan.com/thermodynamics/

Basic Terms and Theory
   from Engineers Edge. A definitions, short explanations and conection of basic thermodynamics therms.
   http://www.engineersedge.com/thermodynamics/table_contents.htm

Carnot cycle
   Applet showing the physics processes of a Carnot heat engine by Fu-Kwun Hwang of the National Taïwan Normal University.
   http://www.phy.ntnu.edu.tw/java/carnot/carnot.html

Converter of physical unit.
   Comprehensive converter of different physical units, including thermodynamics.
   http://www.members.optusnet.com.au/ncrick/converters/heat.html

Fundamentals of Thermodynamics
   Lecture notes and problems from University of Pittsburg.
   http://puccini.che.pitt.edu/~karlj/Classes/CHE2101/

Ideal Gas Law
   Applet illustrating the ideal gas law : action of a piston in a pressure chamber filled with ideal gas.
   http://jersey.uoregon.edu/vlab/Piston/index.html

Internal Combustion Engines Web Site
   Thermodynamics and heat transfer in Internal combustion engine. Applets are used to perform simple calculations. Developed at Colorado State University.
   http://www.engr.colostate.edu/~allan/engines.html

Properties of Heat and Matter
   Online book on Thermodynamics at UC Berkeley.
   http://www.mip.berkeley.edu/physics/bookcdx.html

The Expert System For Thermodynamics
   TEST is a visual environment to solve thermodynamics problems, pursue what-if scenarios and perform numerical experiments.
   http://energy.sdsu.edu/testcenter/

The Second Law of Thermodynamics
   A qualitative introduction to the second law and entropy written for beginners in chemistry but useful for physics students too. Explains relationship with Murphy's Law.
   http://www.secondlaw.com

Thermo Fluids Engineering
   web page of the division of the Eindhoven University of Technology which study processes where fluid flows and heat transfer play a prominent role.
   http://www.tfe.wtb.tue.nl

Thermodynamic Toys
   Contains directions for making toys with thermodynamics background.
   http://www.scitoys.com/scitoys/scitoys/thermo/thermo2.html

Thermodynamics Research Laboratory
   Classical, Quantum, Nanoscale & Statistical Thermodynamics & Mechanics data and property calculation Sites.
   http://tigger.uic.edu/~mansoori/Thermodynamic.Data.and.Property_html

Thermodynamics and Its Applications
   Companion site to the textbook by J. W. Tester and M. Modell, includes answers to selected problems and current errata.
   http://web.mit.edu/testerel/thermo/

Thermodynamics and Statistical Physics
   Collection of educational sites explaining all aspects of thermodynamics.
   http://sky.net.co/physics/termo.html

Thermodynamics and Thermal Physics
   About.com's index to thermodynamics information.
   http://physics.about.com/cs/thermodynamics/index.htm

Thermodynamics from Prof. Ian Waitz
   Basic thermodynamics course of 12 lectures, contains else the self-control questions with statistics of answers.
   http://web.mit.edu/16.unified/www/FALL/thermodynamics/index.html