Terminologue is an open-source terminology management tool. The software is developed and maintained by the Gaois research group in Fiontar & Scoil na Gaeilge, Dublin City University. The software is copyright of Dublin City University and is available under the open-source MIT license. It was originally developed to manage Téarma, the National Terminology Database for Irish (téarma.ie). The Téarma termbase contains c.186,000 entries, managed in a dedicated private instance of Terminologue.