I've been online since 1993 and these are links to the best sites I've found. They largely reflect my own interests, so you may find many subjects unrepresented or under-represented. You're welcome to mail me any links you feel should be included, and I'll visit them myself and include them if I find them interesting.
Obviously I can't check all the links very often, so a few may be broken. If you do find any broken links please mail me.
I've concentrated on making the links page as quick to download as possible rather than worrying too much about the looks.
There are two versions of the same data: Everything on one page & Separate subject-wise sections. The one-page list is large & takes a while to download, but can saved offline easily.
New links are tagged with until the next page update.
Updates are usually every two weeks or so. There's also an RSS feed of new links if you prefer.