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eralchemySchemaCrawler
Free

Free and open source under the Apache-2.0 license.

 Free

Free to use, released under the EPL-2.0 licence.

Command line Windows, macOS, Linux, Command line
  • Builds diagrams from databases and SQLAlchemy models
  • Can generate output as images or PDFs
  • Works with nearly any JDBC database
  • Diff-friendly text output for schema comparisons
  • Requires Python and Graphviz or pygraphviz for image and PDF output
  • Requires Java SE 17 or newer
  • Command-line oriented rather than a graphical client
Downloadable app Downloadable app
Open source Open source
License: Apache-2.0 License: EPL-2.0
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked October 8, 2026

Checked October 2, 2026

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