2014

• Plantinga, Harry, Biblical Knowledge Graph, CCEL Tech. Report #15, April 2014 [revision of TR #8]
• Plantinga, Harry, PWP Specification, CCEL Tech. Report #14, April 2014
• Plantinga, Harry, CCEL Home Page Tuneup, CCEL Tech. Report #13, April 2014
• Plantinga, Harry, Book Browsing at CCEL, CCEL Tech. Report #12, April 2014
• Plantinga, Harry, Cataloging for the Preaching and Worship Portal, CCEL Tech. Report #10, April 2014
• Plantinga, Harry, Semantic Search for the Preaching and Worship Portal, CCEL Tech. Report #9, April 2014
• Plantinga, Harry, PWP Ontology Plan, CCEL Tech. Report #8, April 2014
• Plantinga, Harry, Hymnary 2020 Strategic Plan, CCEL Tech. Report #6, April 2014
• Plantinga, Harry, Hymnary Subscription Plan, CCEL Tech. Report #7, March 2014
• Plantinga, Harry, State of the CCEL 2013, CCEL Tech. Report #5, January 2014, forthcoming

2013

• Plantinga, Harry, Preaching and Worship Portal User Interface Design, CCEL Tech. Report #11, November 2013
• Plantinga, Harry, Preacher Survey Analysis for the Preaching and Worship Portal, CCEL Tech. Report #3, November 2013
• Plantinga, Harry, CCEL 2020 Strategic Plan, Tech. Report #15, August 2013

2012

• Kong, Ha Kyung, The Automatic Generation of Piano Accompaniment from Four-Part Hymns, CCEL Tech. Report #2, 2012
• Verhulst, Ken, Hymnary User Survey Report, CCEL Tech. Report #4, March 2012

2010

• Burns, Nat and Harry Plantinga, Melodic Similarity and Music Search, CCEL Tech. Report #1, 2010

2001

• Plantinga, Harry, ThML: Theological Markup Language For the Christian Classics Ethereal Library v1.02, CCEL Tech. Report #16, February 2001