The website of the research project of the British Academy, Sylloge Nummorum Graecorum (SNG). A detailed form allows the research of coins with multiple criteria. The results refer to the published volumes of the series and the online version is limited to the collections of Great Britain.

With almost 50,000 objects online, the Department of Coins and Medals of the Fitzwilliam museum is one of the first to have started -as early as 2000- the digitalisation of their coin collection, spanning from ancient to modern times, as well as medals since their origin in the Renaissance. 

The Roman Provincial Coinage (RPC) Online project is based in Oxford, it is currently confined to the periods 138–192 AD and 249–254 AD (other periods will be added online in the future) and it includes coins from collections in the world, and from published material. It is searchable by iconography, place, and time and contains information on more than 16,000 coin types, based on more than 60,000 specimens.

The Numismatic Collection of the Bank of Cyprus Cultural Foundation covers the entire range of the Cypriot coinage, from the period of the city-kingdoms of mid. 6th century BC to the modern issues of the Republic of Cyprus. The website contains more than 550 coins online.

The Department of Coins and Medals of the British Museum is one of the world's finest numismatic collections, comprising about one million objects. Part of the collection, that spans the history of coinage from its origins in the 7th century BC to the present day, is currently online.

The ANS collections database contains information on more than 600,000 objects in the Society’s collections. These include coins, paper money, tokens, ‘primitive’ money, medals and decorations, from all parts of the world, and all periods.

Digital Library Numis (DLN) is intended as an universal portal and depository regarding open access numismatic books, journals and papers available on the internet. All entries are presented with detailed bibliographic metadata, often supplemented with a brief summary of the contents. 

Research project focusing on Cypriote coinage implemented at the University of Edinburgh under the supervision of Prof. Keith Rutter during 2004-2008. The updated bibliographical database of this project, created by Dr. Anne Destrooper-Georgiades was integrated into the Kyprios Character website in 2015.

The digital library 'Perseus' of Tufts University brings together various digital collections related to the fields of humanities. The richest sections of the digital library are the digital Greek and Latin literature resources (ancient writers, translations, secondary bibliography, dictionaries etc.).

The collection presents over 1,470 bronze coins of the Macedonian kings that derive from three important private collections: The Alpha Bank collection in Athens, the Charles Hersh collection and the D. Portolos collection. Information on Macedonia, its finances and its monetary history is also provided.