Mermaid Viewer vs ERBuilder vs FigureGPT vs Whimsical

Which one fits you in 2026? Traffic, pricing, input → output, tasks and community side by side.

Your tool
Mermaid Viewer
vs
Competitor 1
ERBuilder
Competitor 2
FFigureGPT
Competitor 3
Whimsical
Compare
4 tools · best value per row highlighted
Your tool Mermaid Viewer
mermaidviewer.com
Mermaid Viewer runs entirely in your browser
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Competitor ERBuilder
soft-builder.com
ERBuilder is a data modeling application from Softbuilder, and its generative AI feature turns plain-language descriptions into entity-relationship diagrams.
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Competitor FFigureGPT
figuregpt.ai
Generate Publication-Ready Figures from Research Papers
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Competitor Whimsical
whimsical.com
Whimsical is a whiteboard for product builders that combines diagrams, flowcharts, mind maps, wireframes and documents on an infinite canvas.
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Traffic estimated monthly website traffic
Monthly visits
143.2Kvisits/mo
5.4Kvisits/mo
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MoM change
▼ 10.9%
▼ 6.3%
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6-month growth
-9.3%
-22.4%
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Global rank web
#317,277
#3,419,998
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Avg. last 3 months
163.4K
5.9K
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Bounce rate lower is better
45%
39%
0%
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Pages / visit
1.8
1.9
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Visit duration
19s
15s
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Traffic sources
● Direct 81% · ● Referral 19%
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Mermaid ViewerERBuilderFigureGPTWhimsical
046.6K93.1K139.7K186.3KMermaid Viewer · 158.9KMermaid Viewer · 157.9KMermaid Viewer · 184.8KMermaid Viewer · 170.5KMermaid Viewer · 186.3KMermaid Viewer · 160.7KMermaid Viewer · 143.2KERBuilder · 10.9KERBuilder · 12.8KERBuilder · 16KERBuilder · 7KERBuilder · 8.8KERBuilder · 8.8KERBuilder · 6.4KERBuilder · 5.8KERBuilder · 5.4K1K10K100K1MMermaid Viewer · 158.9KMermaid Viewer · 157.9KMermaid Viewer · 184.8KMermaid Viewer · 170.5KMermaid Viewer · 186.3KMermaid Viewer · 160.7KMermaid Viewer · 143.2KERBuilder · 10.9KERBuilder · 12.8KERBuilder · 16KERBuilder · 7KERBuilder · 8.8KERBuilder · 8.8KERBuilder · 6.4KERBuilder · 5.8KERBuilder · 5.4KNov '25DecJan '26FebMarAprMayJunJul
Pricing
Model
Freemium
Free Trial
Freemium
Freemium
Starting price
$69.99per month · free tier available
$139per month
$9.9per month · free tier available
$10per month · free tier available
Free tier
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Free trial
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API access
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Plans
Free FreeStarter $69.99/yrPro $119.99/yr
Professional (Subscription) $139/yrEnterprise (Subscription) $399/yrProfessional (Lifetime) $279Enterprise (Lifetime) $799
Basic $9.90/moPro $19.90/moMax $49.90/mo
Free FreePro $10/moBusiness $20/mo
Capabilities input → output
Input
CodeText
Text
ImagesText
ImagesText
Output
CodeImages
Data
Images
Images
Skill level
Intermediate
Intermediate
Intermediate
Beginner-friendly
Categories
Productivity & OfficeAI Diagram Generator
Productivity & OfficeAI Diagram Generator
Productivity & OfficeAI ChartingAI Diagram Generator
Design & CreativeProductivity & OfficeAI Diagram GeneratorAI Mind Mapping+1 more
Tasks what each tool can do · 2 shared · core   partial
Tasks covered
6
5
7
9
Diagrams
Diagram assistance
Flowcharts
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Academic illustrations
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Charts
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Code diagramming
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Data charts
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Data modeling
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Scientific illustrations
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Data visualization
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Database design
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Mermaid images
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Mind maps
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Team collaboration
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Wireframes
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Brainstorming
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Collaborative design
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Schema generation
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UML diagrams
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UX design
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
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Saves
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Reviews
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Prompts
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Verified listing
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Traffic figures are third-party estimates for the tool's own domain; tools sharing a domain with a bigger product are not counted. Pricing is captured from each tool's site and may lag.