Compare software

eralchemySchemaSpy
Free

Free and open source under the Apache-2.0 license.

 Free

Free and open source.

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

Checked October 8, 2026

Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.