nstprs

parses/unparses a Fortran program.

nstdep

computes data dependences of a Fortran program.

nstpar

checks if loop nests are parallel.

f77filt

wraps long lines of Fortran 77 programs.

f90filt

wraps long lines of Fortran 90 programs.

gtknestor

is the graphical interface for Nestor.

Try -h option for one of those tools.