Fortran : Free Fortran Software + Tools + Numerical Recipes + Compiler + Tutorial

C/C++ : ACCU + Numerical Recipies + C/C++Zone + Cprogramming.com + Tutorial

Java/Java Script : J2EE J2SE J2ME JavaVM + java.com + JavaDigest + Java on Linux +Tutorial

OpenGL: OpenGL.org + Tutorial

CDF: NetCDF + Toolbox +Visualizationtools + User's Guide

CVS: CVShome + CVSbubbles +CVS clients in windows + CVS Tutorial

How to use gdb and Emacs to debug C/C++ , Fortran programs