DBeaver - DBeaver - Universal Database Manager and SQL Client.
Dataedo - Database documentation tool
DbSchema - DbSchema - Visual Database Design & Management Tool
SchemaSpy - SchemaSpy is a Java-based tool (requires Java 5 or higher) that analyzes the metadata of a schema...
ApexSQL Doc - ApexSQL Doc creates database documentation in a variety of formats.
DbVisualizer - DbVisualizer is the universal database tool for developers, DBAs and analysts.