Lucidchart is a proprietary, cloud-based diagramming tool used for flowcharts, org charts, and technical diagrams. It's polished and template-rich, but diagrams are stored in Lucidchart's cloud, and full functionality requires a paid subscription past the free tier's limits.
Excalidraw is a good open-source swap if your diagrams are more freeform and collaborative than Lucidchart's structured, template-driven flowcharts — it trades Lucidchart's shape libraries for a simpler, hand-drawn-style canvas you can self-host.
FAQ
Is there a free, open-source alternative to Lucidchart?
Excalidraw is open source (MIT) and free to self-host, though it favors freeform sketching over Lucidchart's structured diagram templates.
What's the best open-source alternative to Lucidchart?
Excalidraw works well for quick, collaborative diagramming; if you need Lucidchart's precise flowchart shape libraries and templates, open-source options remain more limited.
What are the top open-source alternatives to Lucidchart?
Browse all open-source alternatives to Lucidchart above, or explore the full Collaboration category for more options.