| Extension | File Description |
| .J8A | Uncommon Files |
| .J8B | Uncommon Files |
| .J8C | Uncommon Files |
| .J8D | Uncommon Files |
| .J8E | Uncommon Files |
| .J8F | Uncommon Files |
| .J8G | Uncommon Files |
| .J8H | Uncommon Files |
| .J8I | Uncommon Files |
| .J8J | Uncommon Files |
| .J8K | Uncommon Files |
| .J8L | Uncommon Files |
| .J8M | Uncommon Files |
| .J8N | Uncommon Files |
| .J8O | Uncommon Files |
| .J8P | Uncommon Files |
| .J8Q | Uncommon Files |
| .J8R | Uncommon Files |
| .J8S | Uncommon Files |
| .J8T | Uncommon Files |
| .J8U | Uncommon Files |
| .J8V | Uncommon Files |
| .J8W | Uncommon Files |
| .J8X | Uncommon Files |
| .J8Y | Uncommon Files |
| .J8Z | Uncommon Files |
| .J90 | Uncommon Files |
| .J91 | Uncommon Files |
| .J92 | Uncommon Files |
| .J93 | Uncommon Files |
| .J94 | Uncommon Files |
| .J95 | Uncommon Files |
| .J96 | Uncommon Files |
| .J97 | Uncommon Files |
| .J98 | Uncommon Files |
| .J99 | Uncommon Files |
| .J9A | Uncommon Files |
| .J9B | Uncommon Files |
| .J9C | Uncommon Files |
| .J9D | Uncommon Files |
| .J9E | Uncommon Files |
| .J9F | Uncommon Files |
| .J9G | Uncommon Files |
| .J9H | Uncommon Files |
| .J9I | Uncommon Files |
| .J9J | Uncommon Files |
| .J9K | Uncommon Files |
| .J9L | Uncommon Files |
| .J9M | Uncommon Files |
| .J9N | Uncommon Files |
| .J9O | Uncommon Files |
| .J9P | Uncommon Files |
| .J9Q | Uncommon Files |
| .J9R | Uncommon Files |
| .J9S | Uncommon Files |
| .J9T | Uncommon Files |
| .J9U | Uncommon Files |
| .J9V | Uncommon Files |
| .J9W | Uncommon Files |
| .J9X | Uncommon Files |
| .J9Y | Uncommon Files |
| .J9Z | Uncommon Files |
| .JA | Game Files |
| .JA0 | Uncommon Files |
| .JA1 | Uncommon Files |
| .JA2 | Uncommon Files |
| .JA3 | Uncommon Files |
| .JA4 | Uncommon Files |
| .JA5 | Uncommon Files |
| .JA6 | Uncommon Files |
| .JA7 | Uncommon Files |
| .JA8 | Uncommon Files |
| .JA9 | Uncommon Files |
| .JAA | Uncommon Files |
| .JAB | Uncommon Files |
| Extension | File Description |
| .JAC | Uncommon Files |
| .JACKET | Uncommon Files |
| .JACKSUM | Uncommon Files |
| .JAD | Misc Files |
| .JAE | Uncommon Files |
| .JAF | Uncommon Files |
| .JAG | Game Files |
| .JAH | Uncommon Files |
| .JAI | Uncommon Files |
| .JAIL | Uncommon Files |
| .JAJ | Uncommon Files |
| .JAK | Uncommon Files |
| .JAL | Uncommon Files |
| .JAM | CAD Files |
| .JAM2 | Uncommon Files |
| .JAMMIX | Uncommon Files |
| .JAN | Uncommon Files |
| .JAN93 | Uncommon Files |
| .JAO | Uncommon Files |
| .JAP | Uncommon Files |
| .JAPAN | Uncommon Files |
| .JAQ | Uncommon Files |
| .JAR | Executable Files |
| .JARRE | Uncommon Files |
| .JAS | Raster Image Files |
| .JASC | Uncommon Files |
| .JAT | Uncommon Files |
| .JAU | Uncommon Files |
| .JAV | Developer Files |
| .JAVA | Developer Files |
| .JAW | Uncommon Files |
| .JAX | Uncommon Files |
| .JAY | Uncommon Files |
| .JAZ | Uncommon Files |
| .JB0 | Uncommon Files |
| .JB1 | Uncommon Files |
| .JB2 | Raster Image Files |
| .JB3 | Uncommon Files |
| .JB4 | Uncommon Files |
| .JB5 | Uncommon Files |
| .JB6 | Uncommon Files |
| .JB7 | Uncommon Files |
| .JB8 | Uncommon Files |
| .JB9 | Uncommon Files |
| .JBA | Uncommon Files |
| .JBB | Uncommon Files |
| .JBC | CAD Files |
| .JBD | Uncommon Files |
| .JBE | Uncommon Files |
| .JBF | Raster Image Files |
| .JBG | Uncommon Files |
| .JBH | Uncommon Files |
| .JBI | Data Files |
| .JBIG | Raster Image Files |
| .JBIG2 | Raster Image Files |
| .JBJ | Uncommon Files |
| .JBK | Backup Files |
| .JBL | Uncommon Files |
| .JBM | Uncommon Files |
| .JBN | Uncommon Files |
| .JBO | Uncommon Files |
| .JBP | Uncommon Files |
| .JBQ | Uncommon Files |
| .JBR | Raster Image Files |
| .JBS | Uncommon Files |
| .JBT | Uncommon Files |
| .JBU | Uncommon Files |
| .JBV | Uncommon Files |
| .JBW | Uncommon Files |
| .JBX | Uncommon Files |
| .JBY | Uncommon Files |
| .JBZ | Uncommon Files |
| .JC | Misc Files |
| .JC! | Misc Files |
| .JC0 | Uncommon Files |
