.HJT File Extension
File TypeTreePad 6 Database File
What is an HJT file?
File created by TreePad 6 or earlier personal information management software; contains a set of documents structured as a hierarchy of "nodes;" supports text, images, hyperlinks, structured data, and other personal content for each node.
NOTE: TreePad 7 and later use the .TPD file extension, but can still open HJT files.