Excalidraw vs MermaidViewer: Pricing and Ratings Compared (2026)
Entry prices and free plans as read on each vendor's pricing page, and user ratings as published on review sites, for Excalidraw and MermaidViewer side by side. This page compares data; it is not a hands-on review.
On the data: On the data below, Excalidraw leads on lower entry price. We do not name an overall winner for this pair.
Short on time? Here's the quick answer
Based on published vendor pricing and features and on public review data, here's who should pick what:
Excalidraw
Virtual whiteboard for sketching
Best for you if:
- • You want a fully free tool (MermaidViewer requires payment)
MermaidViewer
Create Mermaid diagrams from text, code, or AI with live preview
Best for you if:
- • Developers and technical writers who document systems with Mermaid diagrams
| At a Glance | Excalidraw | MermaidViewer |
|---|---|---|
Starts at | Free plan, paid from $6/mo, billed monthly Excalidraw+ Yearly plan | Free plan, paid from $6.99/mo, billed monthly Starter plan |
Category | Whiteboard Productivity | Diagramming AI Assistants |
Rating | 4.5/5 G2 4.5 31 reviews | n/a |
Free plan | Yes | Yes |
Watch out for | No mention of storage limits on paid plans | n/a |
Choose Excalidraw or MermaidViewer?
Choose Excalidraw if
- You want a fully free tool (MermaidViewer requires payment)
- You want free to use
- You want simple UI
- Budget matters ($6/mo, billed monthly vs $6.99/mo, billed monthly)
- You work in whiteboard, not diagramming
Choose MermaidViewer if
- Developers and technical writers who document systems with Mermaid diagrams
- You want create Mermaid diagrams from text, code, or AI with live preview
- You work in diagramming, not whiteboard
In-Depth Analysis
Excalidraw
Virtual whiteboard for sketching
Excalidraw's pricing is very generous, especially with its robust free tier offering full whiteboard features and collaboration.
Watch out
No mention of storage limits on paid plans
Strengths
- Pro: Free to use
- Pro: Simple UI
- Pro: Sketch aesthetic
Weaknesses
- Con: Basic features
- Con: No rich templates
Key features
MermaidViewer
Create Mermaid diagrams from text, code, or AI with live preview
At $0 for export-only, $6.99/month for cloud saves and extra AI credits, and $11.99/month for SVG/PDF export, MermaidViewer is unusually cheap compared to most diagram-as-a-service tools.
Key features
Plans and prices: Excalidraw vs MermaidViewer
| Tool | Plans and prices | Source |
|---|---|---|
| Excalidraw |
| excalidraw.com/pricing read Oct 6, 2026 |
| MermaidViewer |
| mermaidviewer.net/pricing read Oct 9, 2026 |
Prices as read on each vendor's own pricing page on the date shown. Plans are listed per tool and are not matched against the other tool's plans: a plan name or price in one column says nothing about the same row in the other. Details on Excalidraw pricing and MermaidViewer pricing.
Key Takeaways
Excalidraw
- Lower entry price: $6/mo, billed monthly vs $6.99/mo, billed monthly
MermaidViewer
- Choose if you want create Mermaid diagrams from text, code, or AI with live preview
What the data shows
On the data below, Excalidraw leads on lower entry price. We do not name an overall winner for this pair.
- Only Excalidraw has a published user rating (4.5/5 from 31 reviews); MermaidViewer has none we can show.
- Excalidraw has the lower entry price: $6/mo, billed monthly (Excalidraw+ Yearly) against $6.99/mo, billed monthly (Starter) for MermaidViewer.
- Both have a free plan.
Criteria: user rating (only above 20 reviews on both sides, gap of 0.2 or more), entry price (only on the same billing basis), free plan. How we rate
Frequently Asked Questions
How do Excalidraw and MermaidViewer compare in 2026?
On the data below, Excalidraw leads on lower entry price. We do not name an overall winner for this pair. Only Excalidraw has a published user rating (4.5/5 from 31 reviews); MermaidViewer has none we can show. Excalidraw has the lower entry price: $6/mo, billed monthly (Excalidraw+ Yearly) against $6.99/mo, billed monthly (Starter) for MermaidViewer. Both have a free plan.
What are Excalidraw and MermaidViewer used for?
Excalidraw: Virtual whiteboard for sketching. MermaidViewer: Create Mermaid diagrams from text, code, or AI with live preview.
What does Excalidraw cost vs MermaidViewer?
Excalidraw's cheapest paid plan is Excalidraw+ Yearly at $6/mo, billed monthly. MermaidViewer's cheapest paid plan is Starter at $6.99/mo, billed monthly; it also has a free plan. Prices read on the vendors' pricing pages, latest check Oct 9, 2026.
What's the main difference between Excalidraw and MermaidViewer?
Excalidraw's main strength: free to use. MermaidViewer focuses on create Mermaid diagrams from text, code, or AI with live preview.