Apps with 'Entity Relationship Diagrams' feature

Visual Paradigm for UML (VP-UML) is a UML design tool and UML CASE tool designed to aid software development. VP-UML supports key modeling standards such as Unified Modeling Language (UML) 2.4, SysML, ERD, DFD, BPMN 2.0, ArchiMate 2.0, etc.

StarUML is a program to develop fast, flexible, extensible, featureful, and freely-available UML/MDA platform running on Win32 platform. The goal of the StarUML project is to build a software modeling tool and also platform that is a compelling replacement of commercial UML...

Azimutt is an explorer for your database schema, similar to an Entity Relationship Diagram (ERD) but with features to handle big schema (up to 1000 tables) where most other ERD are too crowded.

DbModeller is a web application which allows you to design your database schema without writing SQL.

A data modeling tool for SQL Server, PostgreSQL, MySQL, MariaDB, SQLite.

EiffelStudio is a development environment for the Eiffel programming language developed and distributed by Eiffel Software.

Graphlytic is a customizable BI web application for graph visualization and analysis of highly interconnected data. Users can interactively explore the graph, look for patterns and get deep insights, applicable for various use-cases, such as research.

DrawSQL is a simple, beautiful database diagram editor for developers to  create,  collaborate and  visualize their entity relationship diagrams. This is especially handy when architecting your app or adding features to your code base.