| Plug-In | 4D plug-ins can be installed by putting them in a Win4DX/Mac4DX folder. |
| Component | 4D component files can be installed using 4D Insider. |
| Code Library | Open source code databases with useful routines. Includes shells. |
| Book | Books, training manuals, and white papers related to 4D development. |
| Tool | Any other products specifically useful to 4D developers. |
| Vertical Application | Commercial applications developed with 4D. |
