The article focuses on the interoperability of research data in the „Slovenian Linguistic Atlas“ (SLA) and VerbaAlpina and compares them with some other dialectological and geolinguistic projects, i. e. the „Slavic Linguistic Atlas“ (OLA, < https://www.slavatlas.org/>) and the „European Linguistic Atlas“ (ALE). 1. Introduction Slovenian dialects are part of many international linguistic and interdisciplinary projects, […]