Design and diagrams
Mermaid Chart alternatives
1 open-source project that already does this job. Free to use - not free to run, which is what the numbers on the right are for.
The projects
What you give up either way
- high-fidelity import and export
- presentation and enterprise controls
- multiplayer cursors and comments
- large template libraries
An open-source project doing the core job proves a replacement is possible. It does not prove it matches Mermaid Chart, and it does not prove anyone has run it for a month. How we decide.