List of data modeling and database design tools.
List of data catalogs tools
List of tools that enable design and building of data dictionaries.
List of tools that help build, maintain an share business glossaries.
List of tools that allow for the design of a database.
List of database ER diagram (ERD) / schema visualization / reverse engineering tools for popular databases.
List of tools that allow the documentation (e.g. with descriptions) of schema of your databases.
List of metadata management tools