An overview is given of the vapor pressure methods which are used for the determination of partial thermodynamic quantities. The methods are divided into four groups: static methods (pressure gauges, atomic absorption, and others); dynamic methods (boiling point method, transpiration method); effusion methods (Langmuir method, different variants of the Knudsen method); equilibration methods (equilibration with gas mixtures, isopiestic method, dew point method). The characteristics of each group are discussed shortly, and some examples of application are given from the recent literature.