Raddle
RAIL
RAISE
RAL
RAMIS II
Rapidwrite
RAPT
RASP
RATEL
RATFIV
RATFOR
RAWOOP-SNAP
R:BASE
RBASIC
RBCSP
rc[1]
rc[2]
RCC
RCL
RDL
Real-Time Euclid
Real-Time Mentat
Real-Time Pascal
REC
Recital
RECOL
RED
REDCODE
RediLisp
REDL
REDUCE
Refal
REF-ARF
Refine
Refined C
Refined FORTRAN
REG-SYMBOLIC
REGTRAL
Relational Language
RELATIVE
RELCODE
REL English
RenderMan Shading Language
RENDEZVOUS
REPL
Required-COBOL
Retrieve
Revised ALGOL 60
REX
REXX
Rez
RIGAL
Rigel
RIPscrip
RLL
RMAG
ROADS
ROBEX
Robotalk
roff
ROME
Rossette
RPG
RPL-1
RPL
RPT
RSL
RTC++
RT-CDL
RTL
RTL/1
RTL/2
Ruby[1]
Ruby[2]
RUFL
RUNCIBLE
RUNOFF
RUSH[1]
RUSH[2]
Russell
RUTH