Linus Torvalds (http://www.cs.helsinki.fi/~torvalds/),
Richard Stallman (http://www.gnu.org/people/rms.html),
Eric S. Raymond (http://www.tuxedo.org/~esr/),
Larry Wall (http://kiev.wall.org/~larry/),
Tim O'Reilly <ask_tim@oreilly.com>,
http://www5.zdnet.com/products/content/pcmg/1709/305867.html http://www.zdnet.com/sr/stories/news/0,4538,2196106,00.html and http://www.zdnet.com/sr/stories/issue/0,4537,396321,00.html
Historically, Open Source Software were used to realise Internet/Intrane servers, because their growth was following the one of the Net. It's so possible to cover all aspects linked to the Internet, from the Web server (Apache), FTP server (Wu-Ftpd), DNS server (Bind), the E-Mail server (Sendmail or Postfix), the Usenet groups server(INN), the proxy server (IPmasqadm), the firewall (IP-Chains), the Cache server for the Web (Squid), or also the Time server (NTP) ... RFCs.
NFS and KNFS or also Coda lpd Samba NetAtalk).
(100 Mbit/s or Myrinet), HP NetRaid[11], HylaFAX Arkeia PostgreSQL or commercial like Oracle,
(Netscape) or textual (lynx), (Kmail, XFMail, ...) or textual (mutt, elm, ...). (Acrobat Reader or xpdf), (ImageMagick, the Gimp, Outils RealPlayer ...), (LyX, LaTeX, SGMLTools, Wordperfect, ...), (ApplixWare, StarOffice), (WavTools, eplaymidi, xmcd, ...), (cdrecord, BurnIT, ... mkisofs, cdparanoia), (Wine, Executor, WABI, DOSEmu, ...), (C, C++, Pascal, Fortran, Basic, Tcl/Tk, Perl, Python, Ada, Eiffel, Lisp, Scheme, Prolog...), including commercial versions ( (PGI, ...), (Gnome, KDE, Motif, ...).
Medasys, Atrid, Alcove HP France, Learning Tree, the IUT de Vélizy,
Voila (France Telecom) or the engine Deja Walnut Creek CDROM server