Languages

Inspired by #FirstSevenLanguages here is a complete list (apart from the one's I've forgotten).

BASIC (ZX80/ZX81/TRS80/BBC/HP/Atari ST)
Z80 / 6502 / 8086 Asm
REXX
APL
PL/1
C 
C++ 
C#
COBOL
FORTH
LISP / Scheme
Lotus 123 script
Batch/Shell scripts (DOS, OS/2, Bash)
Visual Basic 
Pascal / Delphi
SAS Language
SQL
Haskell
CAML Light
Oberon
Perl
Java
JavaScript
Python 
PHP
BPEL
BPMN
Synapse ESB Language

(edited to include the last three which I'd forgotten)