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jGRASPBlueJ
Free

Free to download.

 Free

Free and open source under the GPL-2.0 with the Classpath Exception.

Windows, macOS, Linux Windows, macOS, Linux
  • Data structure viewers that draw textbook-style diagrams
  • Control structure diagrams for many languages
  • Designed for beginners learning Java
  • Native installers for Windows, macOS and Linux, including ARM64
  • Requires Java 11 or later
  • Eclipse plugin has not been updated since 2020
  • Java only
  • Requires a 64-bit operating system; 32-bit users need the old 4.1.4 release
Downloadable app Downloadable app
Closed source Open source
License not stated License: GPL-2.0-only WITH Classpath-exception-2.0
No account needed No account needed
Works offline Not stated if it works offline

Checked October 2, 2026

Checked October 1, 2026

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