Archgram vs the Mermaid live editor

Mermaid is the open diagrams-as-code language Archgram is built on, and its own editors are excellent for writing and sharing Mermaid. Archgram adds what teams ask for around it: other formats and conversion, AI drafting, Git and Drive sync, workspaces with live co-editing, templates and decision records.

	Archgram	Mermaid (live editor and Mermaid Chart)
Notations	Mermaid, D2, PlantUML, Draw.io, Excalidraw	Mermaid
Converting between formats	Sequence, class, ER and flow diagrams convert between formats	Not applicable
Team features	Workspaces, roles, comments, live co-editing	Varies by product and plan
Source of truth	Git sync, with Drive as an option	Your own repository or the hosted product

Choose Mermaid (live editor and Mermaid Chart) if

You only need Mermaid and a quick preview or embed.
You want the official hosted experience from the Mermaid project.

Choose Archgram if

You use more than one notation (D2, PlantUML, Draw.io, Excalidraw) and want to convert between them.
You want diagrams, ADRs and delivery tracking connected in one place.
You want workspaces, roles, comments and live co-editing for a team.

Products change. This page describes approaches as we understand them; check each vendor’s current documentation before deciding.