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Diagram Designer vs yEd Graph Editor: catalog facts
Diagram Designer	yEd Graph Editor
Free Freeware with source code under the MIT licence.	Free Free to download and use; yWorks sells its other diagramming products separately.
Windows	Windows, macOS, Linux
Small 2 MB installer Template palettes for flowcharts and UML	Automatic layout arranges large diagrams in one step Imports data from Excel spreadsheets and XML
Windows only Dated interface and simple feature set	Closed source Desktop only; online editing requires other yWorks products
Downloadable app	Downloadable app
Open source	Closed source
License: MIT	License: Proprietary freeware
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

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