Analytical computations and their usage in high energy physics

Description of program systems for analytical calculations (SAC), presenting a packet of programs written in algorithmical language or in the language of machine commands, is presented. Depending on the purpose SAC are divided into two groups: specialized systems, intended for quite a certain field of application and systems of general use. It is shown that a considerable part of works is connected with SAC application in celestial mechanics, general relativistic theory and quantum field theory. Capabilities of the systems SCHOONSCHIP, REDUCE, ASHMEDAI, used in solution of quantum field theory tasks, permitting in a reasonable time to make calculations of 3-4-loop diagrams in gauge theories are described. Certain examples of SAC are considered. It is shown that calculations in supersymmetric theories in superfield formalism is one of the most interesting and perspective applications of the systems as well as calculations is lattice gauge theories