Koofr is a cloud storage service from Slovenia for individuals and organisations. Its distinguishing feature is multi-cloud access: users connect existing accounts at other providers and search all their files from one app. Koofr also offers Koofr Vault, a separate zero-knowledge storage application in which files are encrypted on the client side. Vault is available as a web app and as iOS and Android apps, and works with rclone. The service is delivered as a hosted service.
Koofr d.o.o. is headquartered in Ljubljana, Slovenia, an EU member state. According to its privacy policy, the servers are hosted in Germany, in ISO 27001-certified data centres; the hosting provider is not named. No foreign parent company is named. Koofr Vault is open source; the main service is not described as open source. For European organisations this means EU jurisdiction and EU hosting, with dependence on a third-party data-centre operator.