It is named after a French guy called Pierre Catala, not the language. Probably the name comes from the language but according to the documentation does not seem to be with acute accent.

> The language is named after Pierre Catala, a professor of law who pionneered the French legaltech by creating a computer database of law cases, Juris-Data. The research group that he led in the late 1960s, the Centre d’études et de traitement de l’information juridique (CETIJ), has also influenced the creation by state conselor Lucien Mehl of the Centre de recherches et développement en informatique juridique (CENIJ), which eventually transformed into the entity managing the LegiFrance website, acting as the public service of legislative documentation.

I also came to comment that the software's name might cause confusion with the human language, Catalan.

Not related to the Catalan language but to Pierre Catala: https://github.com/CatalaLang/catala#pierre-catala (https://fr.wikipedia.org/wiki/Pierre_Catala)