This page lists select Greek and Latin lexicons, thesauri, indicies, and vocabularies. Some of the resources are general (found in the left column) while other sources are Patristic author specific (found in the right column).
A Greek English Lexicon of the New Testament and Other Early Christian Literature
Greek-English Lexicon of the New Testament: Based on Semantic Domains
A Patristic Greek Lexicon
A Reverse Index of Patristic Greek
A Primer of Ecclesiastical Latin
Augustinus-Lexikon
Index Verborvm Omnivm Quae Svnt in Q. Septimii Florentis Tertvlliani Tractatv De Praescriptione Haereticorvm
Lexicon Athanasianum
The Rare and Late Latin Nouns, Adjectives, and Adverbs in St. Augustine's De Civitate Dei: A Morphological and Semasiological Study
The Vocabulary of St. Hilary of Poitiers as Contained in Commentarius in Matthaeum, Liber I ad Constantium and De Trinitate: A Morphological and Semasiological Study
Thesaurus Basilii Caesariensis: Opera Omnia
Thesaurus Clementis Alexandrini: Opera Omnia
Thesaurus Sancti Gregorii Nazianzeni