Programmers want to know about Linux

These features make Linux a productive software development environment.

GNU C compiler (gcc)
GNU C++ compiler (g++)
GNU compiler for java (gcj)
GNU make utility
GNU debugger (gdb)
GNU profiling utility (gprof)
Subversion, Concurrent Versions System (CVS) and Revision Control System (RCS)
GNU emacs editor
Perl
Tool Command Language and its graphical toolkit (tcl/tk)
Python
Dynamically linked, shared Libraries