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The Perseus Digital Library is a free, open-source digital library of classical texts, translations, dictionaries, maps and images, run from the Department of Classical Studies at Tufts University. This page is for students and researchers who need to know what it holds, how its older and newer interfaces differ, and how it sits beside other classics resources, so they can decide when to use it and how to record what they used.
What the Perseus Digital Library is
Perseus describes itself as a non-profit enterprise based in the Department of Classical Studies at Tufts University. The National Endowment for the Humanities (NEH) project record names Gregory Crane, a professor of computer science and classics at Tufts, as its founder, and describes it as an open-source digital library whose tools can be reused. Its home page, at perseus.tufts.edu/hopper, lists the Andrew W. Mellon Foundation and the NEH among its funders.
Two names cause confusion. The long-running site is labelled Perseus 4.0, often called the Perseus Hopper. The project’s own news says the team plans Perseus 6, built on the Scaife Viewer, and the Scaife Viewer collection is where the project reports its text counts. Treat the Hopper and the Scaife Viewer as two interfaces onto the same project, not two different libraries.
Who runs it and what it covers
The NEH record states that the project has received eleven NEH grants totalling $1,162,653, supporting lexicons, new digital editions and the integration of other libraries. It describes the holdings as texts with translations, dictionaries, maps, and images of vases, coins and sites.
As reported on the Perseus home page in November 2022, the Scaife Viewer collection contained 2,412 works, 3,192 editions and translations, and about 69.7 million words. Those are the project’s own figures for that date; the home page carries the current numbers.
The home page highlights popular texts such as Caesar’s Gallic War, Catullus, Cicero’s first speech against Catiline, Vergil’s Aeneid, Herodotus, Homer’s Odyssey and Plato’s Republic. It also carries Art and Archaeology images (for example the Temple of Aphaia, Attic vases and the Bartlett Head) and exhibits including "The Ancient Olympics" and "Hercules: Greece’s Greatest Hero". Its top navigation has Home, Collections/Texts, Research and Help.
How to search and use it
Perseus’s help pages (perseus.tufts.edu/hopper/help) are organised into three sections, and these are the interface terms you will meet:
- Start from Collections/Texts in the top navigation to browse works by collection, or use the search bar on the home page.
- Use "All Search Options", the link beside the search bar, when a single box is not enough.
- Read "Help with Searching and Search-related Tools" for how the search tools work.
- Read "Help with the Vocabulary Tool" for the word-lookup and vocabulary features attached to texts.
- Read "Copyright & Warranty" before downloading or reusing material: it covers downloads, reuse and permissions.
The help pages do not give citation instructions, so the following is editorial advice rather than a Perseus rule: when you quote a text, record the author and work, the edition or translation used, the interface (Hopper or Scaife Viewer), the URL and the date you accessed it. Translations and editions differ, and web addresses change; see our note on link rot in citations.
Strengths and limits
Strengths
- A free, open-source library with texts alongside translations, dictionaries, maps and images in one project (NEH project record).
- A large reported corpus of works, editions and translations (the November 2022 figures above).
- Reusable tools, and a help section that documents downloads, reuse and permissions.
Limits
- The interface is in transition: the Hopper (Perseus 4.0) is live while Perseus 6 on the Scaife Viewer is planned, so layouts and links can change.
- It is a library of primary texts and tools, not an index of journal articles.
- Published counts are dated; the figures above are those the project reported in November 2022.
Alternatives and companions
| Resource | Run by | What its own pages say |
|---|---|---|
| Perseus Digital Library | Dept. of Classical Studies, Tufts University | Open-source library of texts, translations, dictionaries, maps and images |
| Thesaurus Linguae Graecae (TLG) | University of California, Irvine | "A Digital Library of Greek Literature" from antiquity to the modern era; Full and Abridged corpus, Canon and Lexica; use is subject to the TLG License Agreement |
For the Loeb series of Greek and Latin texts, see our guide to the Loeb Classical Library. For the wider field and its societies, see what classics is; for arts-and-humanities research infrastructure beyond classics, see DARIAH-EU. To trace scholarship around a text you find, try citation chaining.
FAQ
Who runs the Perseus Digital Library?
It is a non-profit enterprise in the Department of Classical Studies at Tufts University. Its funders include the Andrew W. Mellon Foundation and the NEH.
What is the difference between Perseus 4.0 and the Scaife Viewer?
Perseus 4.0 is the Hopper interface. The Scaife Viewer is the newer interface on which the project plans to build Perseus 6, and where it reports its collection counts.
Is Perseus a database of journal articles?
No. It is a library of primary texts, translations, dictionaries, maps and images.
Can I reuse Perseus material?
The help section titled "Copyright & Warranty" covers downloads, reuse and permissions; read it for the terms that apply to the material you want.
Sources
- Perseus Digital Library home page, perseus.tufts.edu/hopper, read 2026-11-07.
- Perseus help, perseus.tufts.edu/hopper/help, read 2026-11-07.
- NEH, Perseus Project, neh.gov/project/perseus-project, read 2026-11-07.
- Thesaurus Linguae Graecae, University of California, Irvine, stephanus.tlg.uci.edu, read 2026-11-07.
