ERAlchemy: Entity-Relation Diagram Generator

ERAlchemy is a Python library for generating Entity-Relation (ER) diagrams from SQLAlchemy models, declarative database metadata, or a simple text file format. It leverages the external Graphviz engine to visualize the relationships and can output diagrams in various formats such as PNG, SVG, and PDF. The current stable version is 1.6.0, with development activity having slowed in recent years, but it remains a functional tool for its primary purpose.