Systems:
T
E
X
ArabT
E
X
of
Klaus lagally
OMEGA
of
Yannis Haralambous
and
John Plaice
LOUT
of
Jeffrey H. Kingston
Distributions/Tools:
T
E
XLive
for Linux
MiKT
E
X
for Windows
WinEdt
Projects:
LuaT
E
X
X
E
T
E
X
Associations/Organisms:
Taareeb
GUTenberg
TUG
DANTE
CTAN
Unicode