- Ancient Future Worship
- Anglicans Online – Liturgical Resources
- Baptism and the Lord’s Supper in the Life of the Church
- Baptism Celebration
- Calvin Institute of Christian Worship
- Christian Experience and Authority in the World: A Pentecostal Viewpoint
- Cyberjournal for Pentecostal-Charismatic Research
- Desiring God: God Centered Resources from the Ministry of John Piper
- Dixon Pentecostal Research Center
- Early Christian Writings
- EarlyChurch.org – An Internet Resource for Studying the Early Church
- Encounter: Journal for Pentecostal Ministry
- European Research Network on Global Pentecostalism
- EWTN – The Holy Eucharist
- Flower Pentecostal Heritage Center
- Greek Orthodox Diocese of America – Sacraments
- International Pentecostal Holiness Church Archives and Research Center
- Lifeway – 10 Creative Ways to Celebrate the Lord’s Supper
- Monachos.net – Orthodoxy through Patristic, Monastic, and Liturgical Study
- New Testament Gateway – Internet Directory on the New Testament and Christian Origins
- Renewal Dynamics
- Patristic theology of the efficacy of the Eucharist – Tom Ravetz
- Pentecostal World Fellowship
- Sacraments in the New Testament – P. W. Evans
- Society for Pentecostal Studies
- Songs, Choruses, and Hymns for Holy Communion
- The Lord’s Supper in Mennonite Tradition
- The Theologian: The Internet Journal for Integrated Theology
- This Holy Mystery: A United Methodist Understanding of Holy Communion
- Wesley Center for Applied Theology
- Word and Table: Resources for Sundays and Other Holy Days
- World Council of Churches – Baptism, Eucharist, and Ministry
- Worship and the Spirit in the New Testament – N. T. Wright
- Worshipedia