Mogwai ERDesigner!

dbForge Studio for MySQL is the universal MySQL and MariaDB front-end client for database management, administration and development. Devart's MySQL GUI tool provides utilities to compare, synchronize, and backup MySQL databases with scheduling, and gives possibility to analyze and report MySQL tables data. dbForge Studio for MySQL now works with any MariaDB database servers, and supports all MariaDB objects types. Everyone can visually design database structures, execute SQL queries and scripts, and manage MariaDB users and privileges. »

The SQL Power Architect data modeling tool was created by data warehouse designers and has many unique features geared specifically for the data warehouse architect. It allows users to reverse-engineer existing databases, perform data profiling on source databases, and auto-generate ETL metadata.

erwin Data Modeler provides a collaborative environment to manage enterprise data though an intuitive, graphical interface. With a centralized view of key data definitions, you can leverage information as a strategic asset and more efficiently manage your data resources to save time and money.

DBDesigner 4 is a visual database design system that integrates database design, modeling, creation and maintenance into a single, seamless environment.

Open System Architect (OSA) is an application used for modelling a system. OSA currently supports data modelling (physical and logical) with UML in the works. The unique thing about OSA is that it is an Open Source product licensed under the General Public License (GPL). The free factor makes OSA particularly interesting for students but OSA is powerful enough to compare favourably with products costing thousands of dollars.

dbDiffo is an online database designer

ER/Studio is the an industry-leading data modeling tool helping companies discover, document, and re-use data assets.