Catholic Volunteer Network | 1,061 followers on LinkedIn. Catholic Volunteer Network, established in 1963, is a non-profit membership organization of 200 domestic and international volunteer and lay mission programs. Currently, more than 10,000 volunteers and lay missioners serve in these programs throughout the U.S. and in 108 other countries. Catholic Volunteer Network publishes and distributes RESPONSE, the most comprehensive handbook of lay mission volunteer opportunities.