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SchemaSpyeralchemy
Free

Free and open source.

 Free

Free and open source under the Apache-2.0 license.

Windows, macOS, Linux, Command line Command line
  • Generates ER diagrams automatically
  • Static HTML output is easy to share
  • Builds diagrams from databases and SQLAlchemy models
  • Can generate output as images or PDFs
  • Requires Java and the right JDBC driver
  • Command-line configuration only
  • Requires Python and Graphviz or pygraphviz for image and PDF output
Downloadable app Downloadable app
Open source Open source
License: LGPL-3.0 License: Apache-2.0
No account needed Not stated if an account is needed
Works offline Not stated if it works offline

Checked September 24, 2026

Checked October 8, 2026

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