3dt extension is related to 3D Topicscape file. You can run 3DT files with 3d Topicscape software.
3D Topicscape: This software stands for organization assitant. This assistant operates in 3d. 3dt file format use Firebird database system ( It is open source coded database). You will need 3d Topicscape software to open these kind of files. You may need detailed information about this format, in this case you can check these links: topicscape.com , 3d-scape.com
What to use 3DT
which page related to 3DT file
3DT Related Searches
You can check related links about 3DT fileextension.