Since 1899, the Glossaire des patois de la Suisse romande has been promoting and essentially documenting the linguistic heritage of French-speaking Switzerland. It is based in Neuchâtel and is one of Switzerland's four national dictionaries. Like its partner projects in German-speaking Switzerland, the Grisons and Ticino, its mission is to document the dialects of its linguistic area as completely as possible, to analyse them lexicologically and to make them accessible to the public and the scientific community in the form of a large dialect dictionary. It is hosted by the Centre de dialectologie et d'étude du français régional at the University of Neuchâtel.The dictionary can be accessed online.

The Dicziunari Rumantsch Grischun is published by the Institut Dicziunari Rumantsch Grischun based in Chur. The dictionary contains the entire vocabulary of all idioms and dialects, including the spoken language, documented from the 16th century to the present day. It gathers relevant material collections with a view to inventorying and researching the Grisons Romansh dialects and idioms as well as the Grisons material culture. The institute is also a documentation centre that creates the conditions for giving oral and written information on questions concerning Romansh dialects and culture, as well as for advising scientific research projects concerning the Romansh language and culture. The dictionary can be accessed online.

The Schweizerisches Idiotikon gathers documents in the Alemannic vernacular in Switzerland from the 13th through to the 21st century. Sixteen volumes published so far with more than 135,000 entries amount to the most comprehensive historical dictionary of a German language region. Various collections of words, sayings and idiomatic expressions in manuscript form contributed by individuals, the Swiss German fictional literature of the 19th and 20th centuries, the linguistic literature on Swiss German dialects, and regional dialect dictionaries serve as the basis for the editing process for the living dialects (i.e. dialects documented after 1800 until today). For the historical language (i.e. language documented before 1800), sources dating from the 13th to the 18th century, with the emphasis lying on the 15th and 16th centuries, are incorporated. The dictionary can be accessed online.

Thesaurus linguae Latinae

The Thesaurus linguae Latinae is the first comprehensive dictionary of ancient Latin. It is compiled on the basis of all surviving Latin texts from antiquity (up to 600 AD), both literary and non-literary. For rarer words, it offers all collected evidence, for the others (marked with an asteriscus) an instructive, representative selection. It lists all meanings and all constructions, it documents peculiarities of inflection, spelling and prosody, and it provides information on the etymology of Latin words and their survival in the Romance languages (renowned representatives of Indo-Germanic and Romance studies are responsible for this). The Thesaurus thus offers a comprehensive, richly documented account of the possibilities and history of each Latin word - not only for Latinists, but also for scholars of classical studies in the various fields as well as for neighbouring disciplines. The basis of the dictionary is the Zettelarchiv with around 10 million slips of paper. It is being compiled in Munich at the Bavarian Academy of Sciences and Humanities by an international team. The thesaurus is available in printed and online.

Historical Dictionary of Switzerland

The Historical Dictionary of Switzerland (HLS) is a scientifically compiled, networked, up-to-date and multimedia specialist encyclopaedia on Swiss history. It sees itself both as a reliable research infrastructure for the scientific community and as a comprehensive and attractive information service for the general public. Its (identical) contents are offered in the three national languages German, French and Italian. The HLS counters the inevitable “ageing process” of the contents by monitoring, the results of which are incorporated into the lexicon within the framework of its resources in an update controlled by criteria. As a national encyclopaedia on Swiss history, the HLS is committed to multilingualism in its organisation and services. The HLS consciously tries to use the interaction and application of various media such as text, images, film, sound and infographics as carriers of content to convey information. The foundation and starting point of the online version are the more than 36,000 articles of the print edition (published from 2002 to 2014). These are constantly being thematically expanded, conceptually renewed, consistently linked and adapted to the multimedia requirements of the new medium. At the same time, thanks to close cooperation with the research community and consistent orientation towards the latest research, the lexicon corpus is being systematically supplemented.