Clarin Cloud is a working platform where registered users can store their language materials and use basic tools for their processing. The tool was developed using Nextcloud technology. The platform is integrated with many research tools and applications, while ensuring data security. The materials deposited in Clarin Cloud are not publicly available, but they can be made available to selected users, as decided by the owner of the materials (the sharing process is similar to solutions known from Google Drive or Dropbox). Using Clarin Cloud can be a useful solution for people who work on multiple computers with large amounts of data and for multi-person teams who want to share data updated in real time.