| Extension | File Description |
| .UG8 | Uncommon Files |
| .UG9 | Uncommon Files |
| .UGA | Uncommon Files |
| .UGB | Uncommon Files |
| .UGC | Uncommon Files |
| .UGD | Uncommon Files |
| .UGE | Uncommon Files |
| .UGF | Uncommon Files |
| .UGG | Uncommon Files |
| .UGH | Uncommon Files |
| .UGI | Uncommon Files |
| .UGJ | Uncommon Files |
| .UGK | Uncommon Files |
| .UGL | Uncommon Files |
| .UGM | Uncommon Files |
| .UGN | Uncommon Files |
| .UGO | Uncommon Files |
| .UGP | Uncommon Files |
| .UGQ | Uncommon Files |
| .UGR | Uncommon Files |
| .UGS | Uncommon Files |
| .UGT | Uncommon Files |
| .UGU | Uncommon Files |
| .UGV | Uncommon Files |
| .UGW | Uncommon Files |
| .UGX | Uncommon Files |
| .UGY | Uncommon Files |
| .UGZ | Uncommon Files |
| .UH | Uncommon Files |
| .UH0 | Uncommon Files |
| .UH1 | Uncommon Files |
| .UH2 | Uncommon Files |
| .UH3 | Uncommon Files |
| .UH4 | Uncommon Files |
| .UH5 | Uncommon Files |
| .UH6 | Uncommon Files |
| .UH7 | Uncommon Files |
| .UH8 | Uncommon Files |
| .UH9 | Uncommon Files |
| .UHA | Compressed Files |
| .UHB | Uncommon Files |
| .UHC | Uncommon Files |
| .UHD | Uncommon Files |
| .UHE | Uncommon Files |
| .UHF | Uncommon Files |
| .UHG | Uncommon Files |
| .UHH | Uncommon Files |
| .UHI | Uncommon Files |
| .UHJ | Uncommon Files |
| .UHK | Uncommon Files |
| .UHL | Uncommon Files |
| .UHM | Uncommon Files |
| .UHN | Uncommon Files |
| .UHO | Uncommon Files |
| .UHP | Uncommon Files |
| .UHQ | Uncommon Files |
| .UHR | Uncommon Files |
| .UHS | Uncommon Files |
| .UHT | Uncommon Files |
| .UHTM | Uncommon Files |
| .UHU | Uncommon Files |
| .UHV | Uncommon Files |
| .UHW | Uncommon Files |
| .UHX | Uncommon Files |
| .UHY | Uncommon Files |
| .UHZ | Uncommon Files |
| .UI | Developer Files |
| .UI0 | Uncommon Files |
| .UI1 | Uncommon Files |
| .UI2 | Uncommon Files |
| .UI3 | Uncommon Files |
| .UI4 | Uncommon Files |
| .UI5 | Uncommon Files |
| .UI6 | Uncommon Files |
| .UI7 | Uncommon Files |
| Extension | File Description |
| .UI8 | Uncommon Files |
| .UI9 | Uncommon Files |
| .UIA | Uncommon Files |
| .UIB | Uncommon Files |
| .UIC | Uncommon Files |
| .UID | Uncommon Files |
| .UIE | Uncommon Files |
| .UIF | Disk Image Files |
| .UIG | Uncommon Files |
| .UIH | Uncommon Files |
| .UII | Uncommon Files |
| .UIJ | Uncommon Files |
| .UIK | Uncommon Files |
| .UIL | Uncommon Files |
| .UIM | Uncommon Files |
| .UIN | Uncommon Files |
| .uindex | Uncommon Files |
| .UIO | Uncommon Files |
| .UIP | Uncommon Files |
| .UIQ | Uncommon Files |
| .UIR | Uncommon Files |
| .UIS | Settings Files |
| .UIT | Uncommon Files |
| .UIU | Uncommon Files |
| .UIV | Uncommon Files |
| .UIW | Uncommon Files |
| .UIX | Uncommon Files |
| .UIY | Uncommon Files |
| .UIZ | Uncommon Files |
| .UJ0 | Uncommon Files |
| .UJ1 | Uncommon Files |
| .UJ2 | Uncommon Files |
| .UJ3 | Uncommon Files |
| .UJ4 | Uncommon Files |
| .UJ5 | Uncommon Files |
| .UJ6 | Uncommon Files |
| .UJ7 | Uncommon Files |
| .UJ8 | Uncommon Files |
| .UJ9 | Uncommon Files |
| .UJA | Uncommon Files |
| .UJB | Uncommon Files |
| .UJC | Uncommon Files |
| .UJD | Uncommon Files |
| .UJE | Uncommon Files |
| .UJF | Uncommon Files |
| .UJG | Uncommon Files |
| .UJH | Uncommon Files |
| .UJI | Uncommon Files |
| .UJJ | Uncommon Files |
| .UJK | Uncommon Files |
| .UJL | Uncommon Files |
| .UJM | Uncommon Files |
| .UJN | Uncommon Files |
| .UJO | Uncommon Files |
| .UJP | Uncommon Files |
| .UJQ | Uncommon Files |
| .UJR | Uncommon Files |
| .UJS | Uncommon Files |
| .UJT | Uncommon Files |
| .UJU | Uncommon Files |
| .UJV | Uncommon Files |
| .UJW | Uncommon Files |
| .UJX | Uncommon Files |
| .UJY | Uncommon Files |
| .UJZ | Uncommon Files |
| .UK0 | Uncommon Files |
| .UK1 | Uncommon Files |
| .UK2 | Uncommon Files |
| .UK3 | Uncommon Files |
| .UK4 | Uncommon Files |
| .UK5 | Uncommon Files |
| .UK6 | Uncommon Files |
| .UK7 | Uncommon Files |
| .UK8 | Uncommon Files |
| .UK9 | Uncommon Files |
