The review demonstrates the progress in the The review demonstrates the progress in the chemistry of calix[4]resorcinarenes over the last decade. chemistry of calix[4]resorcinarenes over the last decade. Special attention is paid to their synthesis, conformational Special attention is paid to their synthesis, conformational behaviour, functionalization and ability to serve as cavi-behaviour, functionalization and ability to serve as cavitands and capsules, to form monolayers and host ± guest tands and capsules, to form monolayers and host ± guest complexes. Practical applications of calix[4]resorcinarenes complexes. Practical applications of calix[4]resorcinarenes and their derivatives in various fields are surveyed. The and their derivatives in various fields are surveyed. The bibliography includes 296 references bibliography includes 296 references.