www.sierrastudios.com/games/half-lifethis is the official
Half-life site.

www.halflife.net This is trible dub dot halflife dot net, is
the title of this page. This one is the best
half-life site in English.

www.half-life.nu This is the swedish answer to halflife.net . It is
even better than halflife.net but it is in swedish
so only swedish can understand it contens.

http://www.sierrastudios.com/games/teamfortress
This is the official Half-life Teamfortress site. Take a visit and you will be
suprised! You have to buy the original Half-life to play Teamfortress.

www.valvesoftware.com Valve is the company
behind Half-life.

www.altvista.com Search half-life at Altavista.