Herwig 7 is hosted by Hepforge, IPPP Durham
Herwig  7.1.0
Modules
Here is a list of all modules:
 Hadronization ClassesThese classes are used for the Hadronization
 Helicity classesThese classes are used to include spin correlation effects
 Interfaces classesThese classes are used to interface to external tools, like matrix element generators, jet finder algorithms, etc
 MatrixElement classesThese classes are used for the hard process generation
 Matchbox classesHard process generation at NLO using Catani-Seymour subtraction and NLO matching
 Models classesThese classes are used for specific models, like the Standard Model
 PDF classesThese classes are used for particle density functions
 Shower classesThese classes are used for the Showering
 DipoleShower classesClasses implementing the coherent dipole shower algorithm
 Analysis classesThese classes are used to perform analysis of the events generated by Herwig
 UnderlyingEvent classesThese classes are used for the underlying event
 Utilities classesThese classes provide general utilities
 Decay classesThese classes perform the decays
 Particle Data classParticle properties classses
 Persistency classes [external]