GNU Accounting Utilities	(acct-6.3.2)	http://www.gnu.org/manual/acct-6.3.2/accounting.html
Autoconf	(autoconf-2.52)	http://www.gnu.org/manual/autoconf-2.5.2/autoconf.html
Autogen	(autogen-5.3.1)	http://www.gnu.org/autogen-5.3.1/autogen.html
Automake	(automake-1.5)	http://www.gnu.org/manual/automake-1.5/automake.html
The Bourne Again Shell	(bash-2.02)	http://www.gnu.org/manual/bash-2.02/bashref.html
BC - The Calculator Language (bc-1.06)	http://www.gnu.org/manual/bc-1.0.6/bc.html
The Binary file Descriptor Library (bfd-2.9.1)	http://www.gnu.org/manual/bfd-2.9.1/bfd.html
The GNU Binary Utilities	(binutils-2.10.1)	http://www.gnu.org/manual/binutils-2.10.1/binutils.html
Bison	(bison-1.25)	(http://www.gnu.org/manual/bison-1.25/bison.html
cfengine	(cfengine-1.6.3)	http://www.gnu.org/manual/cfengine-1.6.3/cfengine-reference.html
Concurrent Versions System (cvs-1.9)	http://www.gnu.org/manual/cvs-1.9/cvs.html
Desk Calculator	(dc-1.05)	http://www.gnu.org/manual/dc-1.05/dc.html
Data Display Debugger (ddd-3.2)	http://www.gnu.org/manual/ddd/index.html
DejaGNU	(dejagnu-1.3)	http://www.gnu.org/manual/dejagnu-1.3/dejagnu.html
DiffUtils - Comparing and Merging Files	(diffutils-2.7)	http://www.gnu.org/manual/diffutils-2.7/diffutils.html
Emacs LISP Reference Manual v2.5 for Emacs 20.3 (elisp-manual-20-2.5)	http://www.gnu.org/manual/elisp-manual-20-2.5/elisp.html
GNU Emacs Manual (emacs-20.7)	http://www.gnu.org/manual/emacs-20.7/emacs.html
Programming in Emacs LISP, 2nd Edition	(emacs-lisp-intro)	http://www.gnu.org/manual/emacs-lisp-intro/emacs-lisp-intro.html
GNU File Utilities	(fileutils-3.16)	http://www.gnu.org/manual/fileutils-3.16/fileutils.html
Finding Files	(findutils-4.1)	http://www.gnu.org/manual/findutils-4.1/find.html
GNU Finger	(finger-1.37)	http://www.gnu.org/manual/finger-1.7/finger.html
Fast Lexical Analyzer Generator (flex-2.5.4)	http://www.gnu.org/manual/flex-2.5.4/flex.html
GNU Awk User's Guide	(gawk-3.1.0)	http://www.gnu.org/manual/gawk-3.1.0/gawk.html
The GNU Assembler	(gas-2.9.1)	http://www.gnu.org/manual/gas-2.9.1/as.html
The GNU Compiler Collection	(gcc-2.95.3 through 3.0.3)	http://www.gnu.org/manual/gcc/onlinedocs
The GNU Debugger	(gdb-5.1.1)	http://www.gnu.org/manual/gdb-5.1.1/gdb.html
GetText	(gettext-0.10.35)	http://www.gnu.org/manual/gettext-0.10.35/gettext.html
OpenGL Extremely Easy-to-use Manipulator	(gleem-1.0)	http://www.gnu.org/manual/gleem/gleem.html
The GNU C Library	(glibc-2.2.3)	http://www.gnu.org/manual/glibc-2.2.3/libc.html
GNU MP	(gmp-4.0.1)	http://www.gnu.org/manual/gmp-4.0.1/gmp.html
GNU Go	(gnugo-2.6)	http://www.gnu.org/software/gnugo/gnugo-doc.html  [NOTE:  not on www.gnu.org due to size]
GNU Perfect Hash Function Generator	(gperf-2.7)	http://www.gnu.org/manual/gperf-2.7/gperf.html
The GNU Profiler	(gprof-2.9.1)	http://www.gnu.org/manual/gprof-2.9.1/gprof.html
Grep, the pattern searcher	(grep-2.4)	http://www.gnu.org/manual/grep-2.4/grep.html
The GRand Unified Bootloader	(grub-0.90)	http://www.gnu.org/manual/grub-0.90/grub.html
Gzip, the Data Compression Program	(gzip-1.2.4)	http://www.gnu.org/manual/gzip-1.2.4/gzip.html
Jwhois, an Internet WhoIs client	(jwhois-2.4)	http://www.gnu.org/manual/jwhois-2.4/jwhois.html
GNU Libtool	(libtool-1.4.2)	http://www.gnu.org/manual/libtool-1.4.2/libtool.html
The GNU Linker	(ld-2.9.1)	http://www.gnu.org/manual/ld-2.9.1/ld.html
The GNU Macro Processor	(m4-1.4)	http://www.gnu.org/manual/m4-1.4/m4.html
Mailutils Programming Manual	(mailutils-0.0.9b)	http://www.gnu.org/manual/mailutils-0.0.9b/mailutils.html
GNU Make	(make-3.79.1)	http://www.gnu.org/manual/make-3.79.1/make.html
Nana	(nana-1.14)	http://www.gnu.org/manual/nana-1.14/nana.html
Nano, a small Pico-like text editor	(nano-0.9.99pre3)	http://www.gnu.org/manual/nano-0.9.99pre3/
The GNU Plotting Utilities	(plotutils-2.2)	http://www.gnu.org/manual/plotutils-2.2/plotutils.html
The GNU RADIUS Manual	(radius-0.95)	http://www.gnu.org/software/radius/
Stream EDitor	(sed-3.02)	http://www.gnu.org/manual/sed-3.02/sed.html
SHell ARchiver Utilities	(sharutils-4.2)	http://www.gnu.org/manual/sharutils-4.2/sharutils.html
Tape ARchiver	(tar-1.12)	http://www.gnu.org/manual/tar-1.12/tar.html
The TERMinal CAPabilities Library and Database	(termcap-1.3)	http://www.gnu.org/manual/termcap-1.3/termcap.html
Portable Terminal Control from Scripts	(termutils-2.0)	http://www.gnu.org/manual/termutils-2.0/tput.html
Texinfo	(texinfo-4.0)	http://www.gnu.org/manual/texinfo-4.0/texinfo.html
Texinfo	(texinfo-3.12)	http://www.gnu.org/manual/texinfo-3.12/texinfo.html
Texinfo	(texinfo-3.9)	http://www.gnu.org/manual/texinfo-3.9/texinfo.html	[Note:  this appears to be the oldest edition of the Texinfo docs]
GNU Text Utilities	(textutils-2.0)	http://www.gnu.org/manual/textutils-2.0/textutils.html
Web Get	(wget-1.8.1)	http://www.gnu.org/manual/wget-1.8.1/wget.html
The GNU Network Object Model Environment	(GNOME)	http://www.gnome.org/
The GNU Image Manipulation Program	(The GIMP)	http://www.gimp.org/
SaMBa, the SMB/NetBIOS Server	(samba)	http://www.samba.org/
OpenOffice.org	(openoffice.org)	http://www.openoffice.org/
GNUEnterprise	(GNUe)	http://www.gnuenterprise.org/docs
Squid Web Cache	(squid)	http://squid.visolve.com/squid24s1/contents.htm