I4HL
IAL
IAM
IBEX
ICES
ICETRAN
ICI
ICL
Icon
Iconicode
IC-Prolog
IC Prolog ][
Id
IDAMS
IDEA
IDEAL[1]
IDEAL
IDEF0
IDL[1]
IDL[2]
IDL[3]
IDL[4]
IDL[5]
IDML
IDMS
Id Nouveau
IDOL
IDS/I
IEF
IEW
IF1
IF2
IFIP
IFP
IFPS/PLUS
IFX
IGL
iHTML
IIS
IITRAN
ILE AS/400
IL
ILIAD
ILLGOL
ILLIAC
ILOC
IML
IMP[1]
IMP[2]
IMP[3]
IMP[4]
Ina Jo
Info BASIC
INFORM
Information Algebra
Inglish
InnovAda
Input
INQUIRE
INSIGHT
INSTALL/1
INTCODE
INTELLECT
INTERACTIVE
INTERCAL
INTERCOM
Interlisp
Intermediate Programming Language
Interpress
Iota
IPL
IPS
IQ
IQL
IQLISP
IQRP
IRAF CL
IRC
IRDATA
IRL[1]
IRL[2]
IRL[3]
Ironman
IRSL
Isaac
ISBL
Isabelle-92
ISDL
ISETL
ISIS[1]
ISIS[2]
ISL[1]
ISL[2]
ISLisp
ISM/SML
ISP
ISPL
ISPS
ISWIM
IT
ITCL
Ivan
Iverson's Language
IVTRAN
IXSQL