(Open)Micka is a web-based geospatial metadata catalog and editor supporting ISO and INSPIRE metadata standards. It implements OGC CSW 2.0.2 and supports metadata formats such as ISO 19115/19119/19139, GeoDCAT, and ATOM. Micka includes a built-in thesaurus system and can interoperate with external registries. Built in PHP with PostgreSQL/PostGIS backends, the platform allows metadata search, editing, validation, and publishing, making it suitable for managing spatial datasets in domains like environmental monitoring, agriculture, and public data portals.