Chessopolis! It's lists were the source of many of the below links.
Wall's Chess Links - Bill has a massive list of raw (unsorted,
ChessVille - Pretty good
MECCA: Chess Encyclopedia - 1500 or
so entries on everything chess, which means mostly links to other places.
New In Chess - Tons of links from
the publishers of New In Chess magazine. Good international listing with
lots of non-English pages.
Chess - A good number of links, sorted.
Schackportalen ("Chess Portal")
- In Swedish. Commented chess links. English translation planned.
The Best Chess Tables - Link
The Checkmate of the Postman -
Hundreds of chess problems, including the "The Checkmate of the Day".
Chess Games Links - Collection
of links to websites all around the world where you can download chess games
in various formats (pgn, cbf, cbv, nic,...) for free.
Chess Links - Lots of links.
Chess on the Web -
Comprehensive chess portal.
University of Pittsburg - Has
hundreds of links to various websites