RDT is a template file used by RoboDemo software application developed by Macromedia. After Adobe had acquired Macromedia, RDT format was made compatible with Adobe Captivate application.

RDT files are commonly used to store virtual courses (e-learning courses) data and resources. Initially projects created using Adobe Captivate were exported to Flash format files, but as the software matured Flash was gradually replaced by a newer format. RDT files are supported on Mac and Windows desktop PCs.