Cyber Hymnal — thousands of hymns.  The musical mp3s are fairly rudimentary, but good enough to sing along.  Some of the hymns have been “modernised” with mixed outcomes, but most are fine.  There doesn’t seem to be any attempt at doctrinal discernment, so there are a lot of hymns that aren’t worth much, but there are thousands of good ones.

Wordwise Hymns — hymn histories and Biblical themes in the hymns.  This is a great site.  I love this kind of thing.  It makes the hymns come alive.

Morning & Evening — Spurgeon’s daily devotional.