CrateDB is a hyper-fast opensource distributed database technology that combines the best out of the SQL and NoSQL worlds. It supports the PostgreSQL wire protocol for easy integration with many data engineering tools.
DBeaver is a free and open-source database tool for developers and database administrators. It runs on any platform and supports any database with a JDBC driver.
DBeaver has a built-in support for CrateDB. DBeaver being an open-source cross-platform multi-purpose database tool, with this integration you can explore your database, run queries, manage your data, and much more.