Published by the University of Glasgow, the Thesaurus of Old English Project is an online resource that thematically arranges definitions of terms. Drawing from standard dictionaries of Old English, the project has created thematic entries that are cross referenced with one another. The project is fully searchable; while searching, a user may go directly to the thesaurus’ data or be directed off-site to one of the major dictionaries of Old English. The project has well over 40,000 entries.
Though free to use for individual users, the project makes explicit that large-scale use of data from the project is not allowed. Should users wish to analyze the Thesaurus’ corpus data, they should contact the creators.