Mermaid Viewer vs ERBuilder vs Whiteboard by Athena AI

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
WBWhiteboard by Athena AI
Competitor 3
Suggested competitors for Mermaid Viewer: Tenorshare AI Diagrimo91% Napkin87% Whimsical87% Flowova AI85% AI Diagram Maker84% Eraser84% CodeViz82% DG Diagram-Generator82%
Compare
3 tools · best value per row highlighted
Your tool Mermaid Viewer
mermaidviewer.com
Mermaid Viewer runs entirely in your browser
Remove
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.
Make main Remove
Competitor WBWhiteboard by Athena AI
athenaboard.ai
Instant Visual Creation Describe your concept, and watch as AI instantly generates flowcharts, wireframes, mind maps, or UI prototypes—ready in seconds. Perfect for entrepreneurs, digital teams, and
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
143.2Kvisits/mo
5.4Kvisits/mo
1.1Kvisits/mo
MoM change
▼ 10.9%
▼ 6.3%
▲ 1,238.1%
6-month growth
-9.3%
-22.4%
—
Global rank web
#317,277
#3,419,998
#12,935,820
Avg. last 3 months
163.4K
5.9K
402
Bounce rate lower is better
45%
39%
38%
Pages / visit
1.8
1.9
1.1
Visit duration
19s
15s
—
Traffic sources
● Direct 81% · ● Referral 19%
—
—
Mermaid ViewerERBuilderWhiteboard by Athena AI
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 · 5.4KWhiteboard by Athena AI · 98Whiteboard by Athena AI · 174Whiteboard by Athena AI · 78Whiteboard by Athena AI · 84Whiteboard by Athena AI · 1.1K101001K10K100K1MMermaid 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 · 5.4KWhiteboard by Athena AI · 98Whiteboard by Athena AI · 174Whiteboard by Athena AI · 78Whiteboard by Athena AI · 84Whiteboard by Athena AI · 1.1KNov '25DecJan '26FebMarAprMayJunJul
Pricing
Model
Freemium
Free Trial
Freemium
Starting price
$69.99per month · free tier available
$139per month
$5.99per month · free tier available
Free tier
–
Free trial
–
–
API access
–
–
–
Plans
Free FreeStarter $69.99/yrPro $119.99/yr
Professional (Subscription) $139/yrEnterprise (Subscription) $399/yrProfessional (Lifetime) $279Enterprise (Lifetime) $799
—
Capabilities input → output
Input
CodeText
Text
Text
Output
CodeImages
Data
Images
Skill level
Intermediate
Intermediate
Beginner-friendly
Categories
Productivity & OfficeAI Diagram Generator
Productivity & OfficeAI Diagram Generator
Design & CreativeProductivity & OfficeAI Diagram GeneratorAI Mind Mapping+1 more
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
3
1
3
Diagrams
Diagram assistance
–
–
Flowcharts
–
–
Mind maps
–
–
UX design
–
–
Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
▲ 0
Saves
0
0
0
Reviews
0
0
0
Prompts
0
0
0
Verified listing
–
–
–

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.