Hi, I've just committed the incorporation of "luasocket" by Diego Nehab, see http://www.tecgraf.puc-rio.br/~diego/professional/luasocket/ This allows luatex to browse the web ;-) The lua support modules are also preloaded inside the executable, so there are still no external file dependancies. But a small warning is in order: The inclusion is not yet completely finished. There is still a mis-configuration during cross-compile build for mingw32. The problem is that on windows, luatex now needs to be linked against the winsock library. (On linux, sockets are built in so it works without further configuration, I do not know the situation on other platforms). So crosscompilation works only after manual intervention by (after a failed build is complete) setting socketlibs = -lwsock32 in build-windows/texk/web2c/Makefile, then relinking. Perhaps other systems require similar trickery for now. I will fix this soon, but not today. On linux all should compile fine, and you should be able to compile and run the examples from src/libs/luasocket/{etc,samples,test} under "texlua" without need to change anything inside them. Testing welcome. Best wishes, Taco