Federation of Diocesan Liturgical Commissions
The FDLC is an official collaborating agent between the local church through diocesan worship offices and liturgical commissions and the USCCB Office of Divine Worship.  The FDLC provides excellent catechetical resources on the liturgy for parishes, an annual national meeting and networking.

National Association of Pastoral Musicians
The NPM is an organization of musicians and clergy dedicated to fostering the art of musical liturgy.  Services include: publications, national conferences/workshops and networking

Notre Dame Center for Liturgy
Located on the campus of the University of Notre Dame, the NDCL is dedicated to liturgical research and pastoral liturgy.  Services include: publications, bibliographies, church documents on the liturgy, conferences, and networking.

A free online resource and service for those involved in parish catechumenate ministry – both novice and experienced.