CalcHEP

• CalcHEP
  CalcHEP is a package for calculation of Feynman diagrams and integration over multi-particle phase space. The author is Alexander Pukhov and it can be downloaded from the CalcHEP Home Page

• LanHEP
  LanHep is a package that produces model files for CalcHEP. The author is A. V. Semenov and it can be downloaded from the LanHEP Home Page