Overviews of linguistic resources on the web
Summer Institute of Linguistics (very comprehensive)
YAHOO - Linguistics
and Human Languages (very comprehensive)
Online resources: language teaching, linguistics, communication, practical advice
Linguistics, Natural Language and Computational Linguistics Meta-Index
Linguistics Sources on the World-WideWeb
Linguistics (maintained by the LINGUIST list)
The Human Languages Page (some 30 languages)
Links on speech research (very comprehensive)
Speech Web Sites
Linguistic On-Line
Resources and Journals