Well, barely a year after the last version
planetGenesis 1.9 has crawled out of the woodwork.
planetGenesis is a free, open source, cross platform terrain generation program written in Java with export formats targeting both versions of Terragen
amongst others. New features include new noise options, a bag full of new functions, a more details 3d preview and Torus shaped output, including Torus UV bitmaps which by definition are tillable.
Download from Sourceforge
http://sourceforge.net/projects/planetgenesis/ or check out the home page
http://planetgenesis.sf.netDave
