UAN
UBASIC
uC++
UCSD Pascal
U-code
UDL/I
UHELP
UGLIAC
UIL
ULP
UMIST
UML
UNBASIC
UNCOL
UNICODE
UNIFORM
UNIQUE
UNISAP
UNITY
Uranus
USE
USL[1]
USL[2]
USSA
utility-coder
UTOPIST