Hackolade - Visual data modeling for NoSQL and multimodel databases: MongoDB, DynamoDB, and Couchbase schemas
Vertabelo - Online tool for visual database design.
erwin Data Modeler - erwin Data Modeler provides a collaborative environment to manage enterprise data though an...
MySQL Workbench - MySQL Workbench is a unified visual tool for database architects, developers, and DBAs.
DbDesigner.net - DbDesigner is a web application which allows you to design your database schema without writing SQL.
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.