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ProcessOndraw.io
Freemium

Free to use after registering, with a paid team edition.

 Free

Free and open source under Apache 2.0. The project states you can use it for any purpose…

Web Windows, macOS, Linux
  • Covers a wide range of diagram types in one tool
  • Real-time collaboration with version history
  • Works entirely offline with files stored locally, so nothing is uploaded
  • Large shape libraries including AWS, Azure, Cisco and Kubernetes icon sets
  • Interface and documentation are in Chinese
  • Files are kept in the vendor's cloud
  • Electron, so it is heavy for a diagram editor
  • No real-time collaboration in the desktop build
Downloadable app, Web application Downloadable app
Closed source Open source
License not stated License: Apache-2.0
Account needed No account needed
Not stated if it works offline Works offline

Checked October 2, 2026

Checked September 21, 2026

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