Dictionaries

Ein Wörterbuch des Lateinischen von Petrarca bis 1700, by Johann Ramminger (of the TLL)
http://ramminger.userweb.mwn.de/

Neo-Latin Lexicon Project
https://neolatinlexicon.org/
 

Texts

Adulescentia: The Eclogues of Baptista Mantuanus (1498), 2nd. ed., The Philological Museum, edited by Lee Piepho 
http://www.philological.bham.ac.uk/mantuanus/

An Analyic Bibliography of On-line Neo-Latin Texts, Dana F. Sutton, The University of California, Irvine 
http://www.philological.bham.ac.uk/bibliography/

Armarium Labyrinthi: Labyrinth Latin Bookcase (Various Ancient and Medieval Texts) 
http://www8.georgetown.edu/departments/medieval/labyrinth/library/latin/latin-lib.html

Bibliotheca Latina (Boccaccio, Buchanan, Camererarius, Erasmus, Vives, et al.) 
http://www.grexlat.com/biblio/index.asp

Collection of Dutch Neo-Latin Literature
http://www.let.leidenuniv.nl/Dutch/Latijn/Heinsius.html

Corpus Thomisticum (Works of Thomas Aquinas, thirteenth century but still of importance in the Renaissance) 
http://www.corpusthomisticum.org/iopera.html

Database of Nordic Neo-Latin Literature 
http://www.uib.no/neolatin

Erasmus’ Colloquia
http://www.stoa.org/colloquia

IntraText Digital Library (over 700 texts, mostly Medieval and Renaissance) 
http://www.intratext.com/LAT

Knights of Columbus Vatican Film Library at Saint Louis University 
http://www.slu.edu/libraries/vfl

Loebs Online
http://ryanfb.github.com/loebolus/

Neo-Latin Humanist Texts — Digital Book Index (1500s/1600s, w/translations)
http://www.digitalbookindex.com/_search/search010literatureneolatina.asp

Nova Vulgata (The Vatican’s New Latin Vulgate, originally from late Antiquity but indispensable for Renaissance Studies)
http://www.vatican.va/archive/bible/nova_vulgata/documents/nova-vulgata_index_lt.html

Papal Documents of Interest to the Latinist and/or Student of Philosophy, Religion, and the History of Ideas, compiled by John Piazza
http://www.johnpiazza.net/papaldocs.htm

Project Gutenberg (Classical Latin and Neo-Latin Texts)
http://www.gutenberg.org/browse/languages/la

The Latin Library (Classical Latin Texts)
http://www.thelatinlibrary.com

The Latin Library (Medieval Texts) 
http://www.thelatinlibrary.com/medieval.html

The Latin Library (Neo-Latin Texts)
http://www.thelatinlibrary.com/neo.html

The Philological Museum: A site devoted to Humanistic Letters, principally British, published under the auspices of The Shakespeare Institute of the University of Birmingham

Including:

Library of Humanistic Texts 
http://www.philological.bham.ac.uk/library.html

Analytic Bibliography of On-line Neo-Latin Texts by Dana F. Sutton (access to more than 26,000 Neo-Latin texts)
http://www.philological.bham.ac.uk/bibliography/index.htm

Thesaurus Eruditionis
CAMENA – Corpus Automatum Multiplex Electorum neolatinitatis Auctorum
TERMINI – Structured Vocabulary of Early Modern Knowledge
http://www.uni-mannheim.de/mateo/camenahtdocs/camenaref_e.html

Thesaurus Musicarum Latinarum (Corpus of Latin music theory from the Middle Ages and Renaissance) 
http://www.chmtl.indiana.edu/tml/start.html

Vives, Joan Lluís, De institutione foeminae christian[a]e . . . libri tres 
http://www.lluisvives.com/servlet/SirveObras/jlv/35737286114805617422202/index.htm

University of Warwick, Society for Neo-Latin Studies (Neo-Latin Texts)
http://www2.warwick.ac.uk/fac/arts/ren/snls/neolatintexts/