  Recent results and future prospects of the particle physics experiments with
neutral and charged K-meson (kaon) decays are reviewed. Topics include CP
violation, rare decays, leptons in kaon decays, tests of CPT and quantum
mechanics, radiative decays, hadrons in kaon decays, basic observables, Vus and
CKM unitarity, and exotic searches. Experimental techniques developed for the
kaon decay experiments are discussed.
