Blender addon to import and export .ter files.
The addon may import and export .ter (Terragen) files. Actually may import/export only squared terrain. In a near future will also export a complete project (.tgd).
wiki: https://github.com/kalwalt/terragen_utils/wiki
issue tracker: https://github.com/kalwalt/terragen_utils/issues
For a description and info about Terragen software visit the planetside page: http://planetside.co.uk/
details on .TER file format: http://planetside.co.uk/wiki/index.php?title=Terragen_.TER_Format
Blender is an open source software visit the official page: https://www.blender.org/
For now tested only with linux64 under Ubuntu 16.04, Blender version 2.78a.
p.s. This addon is still in development there are some issues i hope to fix soon.