FlowViz vs Onlook
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
FlowViz compared with Onlook
| Detail | 
FlowViz | 
Onlook |
|---|
| What it does | Free live Mermaid diagram editor with no signup required
| A free, local-first visual editor for designers to craft code in real React codebases
|
|---|
| Stage | Not given
| Startup
|
|---|
| Founded | Not given
| Not given
|
|---|
| Based in | Not given
| US
|
|---|
| Pricing model | Free
| Freemium
|
|---|
| Pricing | Not given
| Free self-hosted version available on GitHub. For Teams: Custom pricing tailored to your team's needs. Contact us or book a demo.
|
|---|
| Key features | - Live preview as you type
- 21 diagram types including flowcharts, sequence, class, state, ER, Gantt, git graph, mindmap and timeline
- Two-way editing for flowcharts
- SVG and PNG export
- Share diagrams as URLs with embedded diagram content
- Built-in template picker and cheatsheet
- No account or signup required
- Works entirely in browser with local storage
- Open Mermaid Live Editor links
- Mermaid v11 syntax support
| - Real-time visual editing of React components
- Infinite canvas design interface
- Real-time collaboration on code
- Works with existing React projects and Storybook
|
|---|
| What makes it different | - No signup, paywall, or data collection required
- Diagrams stay in your browser's local storage by default
- Two-way editing that updates code when you edit the canvas
- Live preview with no render button required
- Clean SVG export for professional use in docs and slides
| - Code is the source of truth—no design drift from implementation
- Works directly in real codebases with existing design systems
- AI-assisted design generation that understands React architecture
- Open-source and transparent to the development community
|
|---|
| Community votes | 0 | 0 |
|---|
| DR (Domain Rating by Ahrefs) | 10 ▼ −4 (down) since last check | 59 ● no change since last check |
|---|
| Trust Flow (Majestic) | 5 | 17 |
|---|
| Citation Flow (Majestic) | 27 | 36 |
|---|
| Referring domains (Majestic) | 76 | 799 |
|---|
4 details filled in for both companies.
More alternatives to FlowViz More alternatives to Onlook