There are three mailing list active to which any GEOtop or NewaGE users/developer/sympathizer can send request and information:
GEOtop users: it treats questions about GEOtop usage, GEOtop new realeses announcements, GEOtop's physics, parameters setting, suggestions, the production of documentation, etc
GEOtop developers: it treats about GEOtop bugs, malfunctions, source code, source code development etc.
newAgeUsers: it discusses the use of Jgrass-NewAGE components, their releases, their physics, parameters setting, and everything about NewAGE
newAgeDevelopers: it discusses the source code of any NewAGE components, question related to the newAGE repository, bugs, the development of new components, the cleaning of old ones, etc.
Everybody can participate.