Gdb
From MohidWiki
Gdb is the GNU *nix platform debugger. Can debug C, C++, Ada and Fortran amongst others.
Usage
Here's a useful setup for usage with vim editor in bash
> EDITOR=/usr/bin/vim > export EDITOR > gcc -g debug_me.c -o debug_me > gdb debug_me gdb> set language fortran gdb> run
Setting a breakpoint at line 46
gdb> break ModuleGlobalData.F90:46
Editing a source file at line 23
gdb> edit ModuleGlobalData.F90:23
Help
gdb> help gdb> help info gdb> info functions gdb> info sources gdb> info source