| Extension | File Description |
| .XK0 | Uncommon Files |
| .XK1 | Uncommon Files |
| .XK2 | Uncommon Files |
| .XK3 | Uncommon Files |
| .XK4 | Uncommon Files |
| .XK5 | Uncommon Files |
| .XK6 | Uncommon Files |
| .XK7 | Uncommon Files |
| .XK8 | Uncommon Files |
| .XK9 | Uncommon Files |
| .XKA | Uncommon Files |
| .XKB | Uncommon Files |
| .XKC | Uncommon Files |
| .XKD | Uncommon Files |
| .XKE | Uncommon Files |
| .XKF | Uncommon Files |
| .XKG | Uncommon Files |
| .XKH | Uncommon Files |
| .XKI | Uncommon Files |
| .XKJ | Uncommon Files |
| .XKK | Uncommon Files |
| .XKL | Uncommon Files |
| .XKM | Uncommon Files |
| .XKN | Uncommon Files |
| .XKO | Uncommon Files |
| .XKP | Uncommon Files |
| .XKQ | Uncommon Files |
| .XKR | Uncommon Files |
| .XKS | Uncommon Files |
| .XKT | Uncommon Files |
| .XKU | Uncommon Files |
| .XKV | Uncommon Files |
| .XKW | Uncommon Files |
| .XKX | Uncommon Files |
| .XKY | Uncommon Files |
| .XKZ | Uncommon Files |
| .XL$ | Uncommon Files |
| .XL0 | Uncommon Files |
| .XL1 | Uncommon Files |
| .XL2 | Uncommon Files |
| .XL3 | Uncommon Files |
| .XL4 | Uncommon Files |
| .XL5 | Uncommon Files |
| .XL6 | Uncommon Files |
| .XL7 | Uncommon Files |
| .XL8 | Uncommon Files |
| .XL9 | Uncommon Files |
| .XLAMENX | Uncommon Files |
| .XLAT | Uncommon Files |
| .XLE | Uncommon Files |
| .XLG | Uncommon Files |
| .XLH | Uncommon Files |
| .XLI | Uncommon Files |
| .XLJ | Uncommon Files |
| .XLN | Uncommon Files |
| .XLO | Uncommon Files |
| .XLP | Uncommon Files |
| .XLQ | Uncommon Files |
| .XLSBENX | Uncommon Files |
| .XLSENX | Uncommon Files |
| .XLSMENX | Uncommon Files |
| .XLSXENX | Uncommon Files |
| .XLTMENX | Uncommon Files |
| .XLTXENX | Uncommon Files |
| .XLU | Uncommon Files |
| .XLX | Uncommon Files |
| .XLXML | Uncommon Files |
| .XLY | Uncommon Files |
| .XLZ | Uncommon Files |
| .XM0 | Uncommon Files |
| .XM1 | Uncommon Files |
| .XM2 | Uncommon Files |
| .XM3 | Uncommon Files |
| .XM4 | Uncommon Files |
| .XM5 | Uncommon Files |
| Extension | File Description |
| .XM6 | Uncommon Files |
| .XM7 | Uncommon Files |
| .XM8 | Uncommon Files |
| .XM9 | Uncommon Files |
| .XMA | Uncommon Files |
| .XMAS | Uncommon Files |
| .XMC | Uncommon Files |
| .XME | Uncommon Files |
| .XMFG | Uncommon Files |
| .XMG | Uncommon Files |
| .XMH | Uncommon Files |
| .XMIT | Uncommon Files |
| .XMJ | Uncommon Files |
| .XMK | Uncommon Files |
| .XMLBACKUP | Uncommon Files |
| .XMLS | Uncommon Files |
| .XMM | Uncommon Files |
| .XMN | Uncommon Files |
| .XMO | Uncommon Files |
| .XMPCF | Uncommon Files |
| .XMPSES | Uncommon Files |
| .XMPTF | Uncommon Files |
| .XMQ | Uncommon Files |
| .XMR | Uncommon Files |
| .XMS | Uncommon Files |
| .XMT | Uncommon Files |
| .XMT_TXT | Uncommon Files |
| .XMU | Uncommon Files |
| .XMV | Uncommon Files |
| .XMW | Uncommon Files |
| .XMX | Uncommon Files |
| .XMXP | Uncommon Files |
| .XMY | Uncommon Files |
| .XN0 | Uncommon Files |
| .XN1 | Uncommon Files |
| .XN2 | Uncommon Files |
| .XN3 | Uncommon Files |
| .XN4 | Uncommon Files |
| .XN5 | Uncommon Files |
| .XN6 | Uncommon Files |
| .XN7 | Uncommon Files |
| .XN8 | Uncommon Files |
| .XN9 | Uncommon Files |
| .XNA | Uncommon Files |
| .XNC | Uncommon Files |
| .XND | Uncommon Files |
| .XNE | Uncommon Files |
| .XNF | Uncommon Files |
| .XNG | Uncommon Files |
| .XNH | Uncommon Files |
| .XNI | Uncommon Files |
| .XNJ | Uncommon Files |
| .XNL | Uncommon Files |
| .XNM | Uncommon Files |
| .XNML | Uncommon Files |
| .XNN | Uncommon Files |
| .XNO | Uncommon Files |
| .XNP | Uncommon Files |
| .XNQ | Uncommon Files |
| .XNR | Uncommon Files |
| .XNS | Uncommon Files |
| .XNU | Uncommon Files |
| .XNV | Uncommon Files |
| .XNW | Uncommon Files |
| .XNX | Uncommon Files |
| .XNY | Uncommon Files |
| .XNZ | Uncommon Files |
| .XO0 | Uncommon Files |
| .XO1 | Uncommon Files |
| .XO2 | Uncommon Files |
| .XO3 | Uncommon Files |
| .XO4 | Uncommon Files |
| .XO5 | Uncommon Files |
| .XO6 | Uncommon Files |
| .XO7 | Uncommon Files |
