Hymns are primarily songs sung by congregations in worship. Unlike "anthems", the music is short--2 to 12 lines or so, with 4 to 8 lines being most common--and the text is divided into stanzas, with the music repeated for each stanza.
There is some content overlap with the "Gospel Music" category, which is more oriented toward "concert to audience" performance.
"Chant," a very distinct musical style, is a separate category.
"Carols"--a similar style with overlapping content, but more social than congregational in use--may be found either here or in the related "Carols" category.
"Anthems" don't really have a home yet.
Sites may contain hymn texts (lyrics), music written or used for hymns (midi files; or scores in graphic or other format) historical information about the origin or use of this music (hymnology); advertisements for hymnals, recordings, or indexes; indexes/links to printed or internet resources.
Site descriptions begin with bracketed keywords including type of content (midi, scores, lyrics, links, indexes, hymnology); Hymnal names; styles (shape notes); denomination or nation (Baptist, Wesleyan, Lutheran, Canada, England, etc.) [feedback on the keywords--value or implementation--is welcome!]
[500 lyrics; 300 midi; links; indexes; interaction: mailing list] public domain material from "United Methodist Hymnal, 1989", "The Standard Psalm Tune Book" (Henry E. Dibdin, 1851), and Isaac Watts' metrical psalter. http://www.hymnsite.com/
[100 lyrics; 50 midi; inc. 10 carols] Song planning software; Song database program with automatic chord transposition; Commercial midi file creation and arrangement service. http://www.simusic.com/
