There was a time when i had a crappy job, Network/IT ran websense and blocked most .com's, for all! for educational purposes most org's were allowed to pass. I could still learn alot with just those below. ( not including all the proxy servers/goolge tricks etc to see whatever you want
COMPUTER: http://www.w3.org/ http://incubator.apache.org/ http://ant.apache.org http://www.sendmail.org http://www.unicode.org/ http://www.gnupg.org/
UNIX/LINUX: http://www.opensource.org http://www.openoffice.org/ http://www.kernel.org/ http://www.freebsd.org http://www.gimp.org http://www.gnome.org http://www.perl.org http://www.xfree86.org/ http://www.xml.org/ http://www.postgresql.org/ http://mozilla.org http://kde.org http://linuxdoc.org http://www.daemonnews.org/ http://www.apache.org/ http://slashdot.org/ http://www.linux.org/ http://www.gnu.org/ http://www.python.org/ http://debian.org http://www.openbsd.org/ http://www.cpan.org http://www.freesql.org http://www.samba.org http://www.vim.org/ http://www.netbsd.org http://phpnuke.org/
SEARCH ENGINES: http://dmoz.org/ http://www.alphasearch.org/ http://www.thrall.org/proteus.html http://www.filmsite.org http://searchengineguide.org/ http://gnet.dhs.org/ http://www.weblens.org/ http://www.evolt.org/ http://www.coseti.org/sengines.htm http://www.infosyssec.org/ http://www.netsearch.org http://searchengineguide.org/addurl.htm http://www.2think.org/search.shtml http://submit.org/
MISC: http://moma.org http://ipl.org http://pbs.org http://phorum.org http://faq.org http://npr.org http://bbb.org http://dncenter.org/ http://health.org http://www.icann.org/ http://www.nature.org http://www.family.org http://www.acs.org/ http://www.askeric.org http://www.chadd.org http://www.pgpi.org http://www.fraud.org http://www.hwg.org http://www.mathforum.org/
ANON SURF: http://www.safeproxy.org/ http://dmoz.org/Computers/Internet/Proxies/Free/ http://www.privacyprotection.org/ http://www.epic.org/privacy/tools.html http://www.searchlores.org/anonyweb.htm http://swpat.ffii.org/patents/effects/anon/index.en.html http://www.hrea.org/lists/huridocs-tech/markup/msg00385.html http://www.progressiveaustin.org/ http://wiasa.org/public_center/software.htm http://mail.spamcon.org/pipermail/suespammers/ 2001-September/001976.html http://dmoz.org/Computers/Security/Internet/Privacy/ http://websecrets.org/ http://www.constitution.org/secupriv.htm http://www.linkspider.org/index.cgi/ Computers/Internet/Proxies/ http://www.interesting-people.org/archives/interesting-people/ 200105/msg00100.html http://www.nymip.org/pipermail/nymip-res-group/ 2001-February/000124.html http://www.cyber-hood-watch.org/ computer_security_resources.htm http://www.epic.org/ http://www.mail-list.org/anonymous.html http://www.multiproxy.org/downloads.htm http://anonymizer.autistici.org/english/anonymizer-FAQ.php http://www.online2001.org/surfing.htm http://www.sans.org/rr/privacy/who.php http://www.acm.org/chapters/bombay/links/linksec012.html http://www.multiproxy.org/cgi-bin/rd.pl?0 http://euyulio.org http://www.wtpfed.org/ofertas/2002-10-11/msg01497.html http://www.privacyalliance.org/resources/rulesntools.shtml http://www.emote.org/index.php/Computers/Internet/Proxies/ http://www.freespeech.org/unlimitedfreedom http://www.freegraphics.org/perlintro.htm
H-READ/SECURITY: http://www.attrition.org/ http://www.linuxchix.org/ http://www.forbiddenweb.org/ http://newag.org/ita/ http://www.psyon.org/ http://www.wolfyserver.org/ http://zor.org/zornews/ http://www.insecure.org/sploits.html http://unixgeeks.org/security/newbie/ http://www.hackerthreads.org/ http://www.happyhacker.org/ http://www.catb.org/~esr/faqs/hacker-howto.html http://www.phreaker.org/