• enscript --language=html
  • it doesn't have totally comprehensive coverage of different formats, but it has most of the major ones (see the list at the bottom of this page)
• vim — the huge advantage of this is that there's a huge community of people who are constantly churning out new syntax files. The downside is that it's possibly kind of heavy.
  • (stock) 2html.vim — Example call:

    vim -f +'syntax on | let html_use_css = 1 | source $VIMRUNTIME/syntax/2html.vim | write | qall" yourfall.pl

  • buf2html.vim

file formats that Enscript supports

% ls /usr/share/enscript/hl/*.st
enscript.st
describe_languages.st
default_faces.st
style_emacs.st
style_emacs_verbose.st
style_ifh.st
style_a2ps.st
style_msvc.st
lang_ansi.st
lang_enscript.st
lang_html.st
lang_overstrike.st
lang_rtf.st
lang_texinfo.st
ada.st
asm.st
awk.st
bash.st
c.st
c_comment.st
c_ppline.st
c_string.st
changelog.st
cpp.st
csh.st
delphi.st
diff.st
diffs.st
diffu.st
elisp.st
fortran.st
fortran_pp.st
haskell.st
html.st
idl.st
inf.st
java.st
javascript.st
ksh.st
m4.st
mail.st
makefile.st
matlab.st
nroff.st
objc.st
outline.st
pascal.st
passthrough.st
perl.st
postscript.st
python.st
pyrex.st
rfc.st
scheme.st
sh.st
skill.st
sql.st
states.st
synopsys.st
tcl.st
tcsh.st
tex.st
vba.st
verilog.st
vhdl.st
vrml.st
wmlscript.st
zsh.st