Asymptote currently ships with the following base modules:
plainsimplexsimplex2mathinterpolategeometrytremblingstatspatternsmarkersmaptreebinarytreedrawtreesyzygyfeynmanroundedpathanimationembedslideMetaPostbabellabelpathlabelpath3annotateCADgraphpalettethreeobjgraph3grid3solidstubeflowchartcontourcontour3smoothcontour3slopefieldode