Real-time collaborative text-to-diagram editor for PlantUML, Mermaid, and Structurizr.
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Pumler is built for architects and tech leads who prefer text-to-diagram workflows, but need modern collaboration and sharing capabilities in the same place.
Edit one diagram together in real time.
Use PlantUML, Mermaid, and Structurizr in one editor.
sequence, usecase, class, object, activity, component, deployment, state, timing, archimate, mindmap, wbs, json, yaml, er, nwdiag
systemContext, container, component, deployment
flowchart, sequence, class, er, journey, gantt, pie, quadrant, requirement, gitgraph, c4, mindmap, timeline, sankey, xychart, block, packet, kanban, architecture, radar, treemap
Export as SVG or PNG, copy image to clipboard, select theme, toggle background, and use upscale presets (including x2 and x4).
Readable syntax colors and inline completion help reduce small DSL mistakes while editing.
- HTTPS for web traffic
- WSS and WebRTC transport for collaboration
- Diagrams are currently not stored on the server
- User accounts
- Diagram version history
- Permanent links
- SSO/SAML
- RBAC and permissions
- Audit logs
- Private workspaces
- API and webhooks
- Self-hosted option
Core editing is free forever. Some advanced capabilities may move to paid plans over time.
Not yet. Product feedback and feature requests are public via GitHub issues.
Yes. Structurizr is supported today, and Mermaid c4 is supported as well.
Yes. Sequence diagrams are supported in both PlantUML and Mermaid with live preview.
Yes. Mermaid support is available today, including flowcharts, sequence diagrams, ER diagrams, Gantt charts, C4, Kanban, timelines, Sankey, treemaps, and more.
No. Pumler runs in the browser.
We welcome feature ideas and bug reports via GitHub Issues.
- Email: info@pumler.com
- GitHub: github.com/pumler/pumler