| Extension Name | Extension Type | Category | Dev.Company | File Format |
|---|---|---|---|---|
| .HS File Extension | Motorola Flash Flex File | Misc | Motorola | Unknown |
| .MTF File Extension | Motorola Theme File | Settings | Motorola | Unknown |
| .NXG File Extension | eSite Builder NXG Web Page | Web | Motorola | Unknown |
| .PHB File Extension | Motorola Phone Book File | Data | Motorola | Binary |
| .SYS File Extension | Motorola Driver File | System | Motorola | Unknown |
| .SHX File Extension | Motorola Flash Superfile | Misc | Motorola | Unknown |
| .S19 File Extension | Motorola S19 File Record | Developer | Motorola | Unknown |
| .SKI File Extension | Motorola Phone Skin File | Settings | Motorola | Unknown |