| extension name | file type | Classification |
|---|---|---|
| JAM | Jam STAPL File | CAD file |
| JBC | Jam STAPL Byte-Code File | CAD file |
| JOB | MetaCAM Nest Job File | CAD file |
| JT | JT Open CAD File | CAD file |
| JVSG | Video Surveillance Project | CAD file |
| JVSGZ | Compressed Video Surveillance Project | CAD file |