I also vote for good old reliable command-line driven tools
using standard I/O that can be run through a terminal and or through a
filter as someone else previously stated.  Put all the bells and
whistles in the actual functionality of the assembler/compiler and not
in the fake flexibility of some GUI-driven monstrosity.

Martin McCormick WB5AGZ  Stillwater, OK
OSU Center for Computing and Information Services Data Communications Group