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λύχνον μεθ' ἡμέραν ἅψας, “ἄνθρωπον,” φησί, “ζητῶ.”
Diogenes Laertius, Vita philosophorum, 6.41

Diogenes is a desktop/laptop application for searching and browsing the legacy databases of texts in Latin and ancient Greek that were once published on CD-ROM by the TLG and the PHI. (NB. These databases are not distributed with Diogenes and must be obtained separately.)

Diogenes is the work of Peter Heslin of the Department of Classics and Ancient History, Durham University.

Features

It's Free
Diogenes is free, open-source software (GPL v3).
Deep Integration of Morphology and Lexica
Click on any word and get a morphological analysis along with the corresponding entries in the LSJ (Greek) or L-S (Latin) lexicon. In the lexicon entries, click on a citation to jump to the context (where possible). Morphological data and the lexica originally come from Perseus; corrected versions of the lexica come from Logeion.
Powerful Searching
You can create groups of texts to search within (and for the TLG, you can select by date, genre, etc.). You can jump from search results right to the context of each passage. You can search for multiple words in any order or phrases within a given scope and delimit that scope by punctuation or number of lines. It is also possible to perform morphological searches (i.e. to search for all or selected inflected forms of a given word).
Efficient Reading
It's easy to open up a given passage of any Greek or Latin text and start reading with the lexicon a click away, or to browse through the dictionaries to look up a word.
XML Export
Texts can be exported as TEI-compliant XML for use with other text-analysis software. The development of his functionality was sponsored by the DigiLibLT project. Exported texts validate against a full TEI schema (see the notes on XML output).
TLL integration
Diogenes provides a facility to download the PDFs of the print version of the Thesaurus Linguae Latinae that have been made freely available from the website of the Bayerische Akademie der Wissenschaften. Diogenes then provides a link to the correct page of the correct volume of that lexicon for each Latin word that has an entry.