Databases – International society for hymnological studies

Charles Wesley’s published works online
Gesangbuchbibliographie Mainz. Mainz hymnal bibliography – contains over 28,000 hymnbook titles in German.
Europeana: a portal to digital collections of European museums, libraries, etc., including many hymnological sources.
Danish reformation hymns – Melodies and texts 1529–1573 (Danske reformationssalmer – Melodier og tekster 1529–1573): Critical edition with commentaries, melody database and publication overview.
Gesangbücher in Württemberg: Hymnals in Württemberg – a project of the State Library of Württemberg.
Größte christliche Liederdatenbank: a database of hymns with texts, mostly in the Protestant free church tradition
Historisch-kritisches Liederlexikon: a database of popular and traditional songs, including hymns, maintained by the Deutsches Volksliedarchiv in Freiburg.
hymnary.org: an index of hymn texts and tunes from North American sources.
Hymn Tune Index: a census of all known hymn tunes printed with English-language texts up through 1820, with their publication history.
Liedboek van die Kerk (2001): database with additional hymns.
Melodiarium hymnologicum Bohemiae: a digital catalogue of monophonic Latin, Czech, and German sacred song found in sources located in the Czech lands or imported into the Czech lands up until the eighteenth century.
Old hymn tunes from Finland: hymn melodies from Finnish manuscripts of the seventeenth and eighteenth centuries.
Oremus: an online hymnal in the Anglican tradition, with texts and MIDI files of tunes used in much of the English-speaking world.
Such, wer da will… – Chorsätze zu allen Liedern des EG: Database with choral settings for the Evangelisches Gesangbuch of the Choir Association of the Protestant Church in Germany (Chorverband der Evangelischen Kirche in Deutschland)
Verzeichnis der im deutschen Sprachbereich erschienenen Drucke des 16. -18. Jahrhunderts: VD 16, VD17, VD 18 – a catalogue of all known books and pamphlets from the German-speaking region printed in the sixteenth through eighteenth centuries.