Perseus Digital Library is a well-established Digital Humanities project providing a library of out-of-copyright editions of canonical world literature with a focus on the Classical languages while expanding its scope beyond its original field. Apart from being a text collection, Perseus also provides a plethora of tools for the analysis of its text material and builds upon a sound base of methodological grounding. The digital library is made up of one main collection (Greek and Roman materials) and several smaller sub-collections spanning a range of other subjects. Data acquisition is achieved semi-automatically. The contents of the library consist of out-of-print text editions, dictionaries and commentaries being enriched by the supply of digital tools for analysis. Perseus Digital Library is reviewed as a whole but a special focus of the review lies on the Greek and Roman sub-collection and sub-projects.