hacker
half-duplex
HDSL
HDX
High-bit-rate DSL
hit
homepage
host
hoster
hosting
hosting provider
hot swap
HTA
HTML
HTML Application
HTML-tag
HTML-дескриптор
HTML-страница
HTML-тег
HTTP
HTTP_REFERER
hyperlink
hypermedia
hypertext
HyperText Markup Language
HyperText Transport Protocol