I just wanted to let you guys know, that i am working on a successor to my txt2ase tool. it will feature support for island sizes bigger (and smaller) than 256*256, a preview window, the ability to open heightfield-files of virtually any dimension and simple manipulation abilities.
So far it is capable of dealing with wilbur Lon-Lat-Files (i hope to add support for microdem xyz-triples in the near future).
output formats will be ascii-text mesh for support of visitor and wilbur txt (which actually works already) to support the great wrptool utility
currently there is no release date planned but i hope to have the first public beta ready in a couple of weeks.