SchemaSpy - SchemaSpy is a Java-based tool (requires Java 5 or higher) that analyzes the metadata of a schema...
Vertabelo - Online tool for visual database design.
ERBuilder - ERBuilder is a data modeling software that provides all the features you would expect from a professional database modeling tool such as reverse engineering, generating DDL scripts and databases, generating data, comparing models & databases and more
MySQL Workbench - MySQL Workbench is a unified visual tool for database architects, developers, and DBAs.
DbSchema - DbSchema - Visual Database Design & Management Tool
Navicat Data Modeler - Navicat Data Modeler allows users to create a conceptual model from an existing database and edit the structure of the database easily.