free programs to open any file extension
12 File Extensions starting with U
.UDI Universal Disk Image
.UOF Unified Office Format Document
.UOF Unified Office Format Spreadsheet
.UOF Unified Office Format Presentation
.UOP Unified Office Format Presentation
.UOS Unified Office Format Spreadsheet
.UOT Unified Office Format Document
.UPI Ulead PhotoImpact Image
.URT Utah raster Image
.UU Uuencoded File
.UUE Uuencoded File
.UYVY YUV 16Bits Image