ERBuilder vs CodeViz vs Napkin vs Eraser

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

Your tool
ERBuilder
vs
Competitor 1
CodeViz
Competitor 2
Napkin
Competitor 3
Eraser
Compare
4 tools · best value per row highlighted
Your tool 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 CodeViz
codeviz.ai
The free tier caps you at five diagrams monthly and one repository
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Competitor Napkin
napkin.ai
Napkin works directly from your text: paste or import it, click generate, and it proposes visuals that match the ideas in the writing.
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Competitor Eraser
eraser.io
Eraser is an AI diagramming tool for technical and process teams that generates diagrams from text prompts, code, or uploaded files.
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Traffic estimated monthly website traffic
Monthly visits
5.4Kvisits/mo
3.4Kvisits/mo
1.3Mvisits/mo
—
MoM change
▼ 6.3%
▼ 44.8%
▼ 8.5%
—
6-month growth
-22.4%
+35.5%
-46.4%
—
Global rank web
#3,419,998
#4,939,424
#36,124
—
Avg. last 3 months
5.9K
4.1K
1.4M
—
Bounce rate lower is better
39%
35%
41%
—
Pages / visit
1.9
1.8
3.9
—
Visit duration
15s
16s
2m 36s
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Traffic sources
—
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● Direct 86% · ● Referral 9%
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ERBuilderCodeVizNapkinEraser
0831.2K1.7M2.5M3.3MERBuilder · 10.9KERBuilder · 12.8KERBuilder · 16KERBuilder · 7KERBuilder · 8.8KERBuilder · 8.8KERBuilder · 6.4KERBuilder · 5.8KERBuilder · 5.4KCodeViz · 4.2KCodeViz · 6.4KCodeViz · 2.7KCodeViz · 2.5KCodeViz · 6.3KCodeViz · 3.3KCodeViz · 2.5KCodeViz · 6.2KCodeViz · 3.4KNapkin · 3.3MNapkin · 2.7MNapkin · 2.4MNapkin · 2.3MNapkin · 2.4MNapkin · 2.1MNapkin · 1.8MNapkin · 1.6MNapkin · 1.4MNapkin · 1.3M1K10K100K1M10MERBuilder · 10.9KERBuilder · 12.8KERBuilder · 16KERBuilder · 7KERBuilder · 8.8KERBuilder · 8.8KERBuilder · 6.4KERBuilder · 5.8KERBuilder · 5.4KCodeViz · 4.2KCodeViz · 6.4KCodeViz · 2.7KCodeViz · 2.5KCodeViz · 6.3KCodeViz · 3.3KCodeViz · 2.5KCodeViz · 6.2KCodeViz · 3.4KNapkin · 3.3MNapkin · 2.7MNapkin · 2.4MNapkin · 2.3MNapkin · 2.4MNapkin · 2.1MNapkin · 1.8MNapkin · 1.6MNapkin · 1.4MNapkin · 1.3MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Free Trial
Freemium
Freemium
Freemium
Starting price
$139per month
$19per month · free tier available
$9per month · free tier available
$15per month · free tier available
Free tier
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Free trial
–
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API access
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Plans
Professional (Subscription) $139/yrEnterprise (Subscription) $399/yrProfessional (Lifetime) $279Enterprise (Lifetime) $799
Free FreePro $19/moTeams $50/moCustom $0
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Free FreeStarter $15/moBusiness $45/moEnterprise Custom
Capabilities input → output
Input
Text
CodeText
DataText
CodeDocumentsImagesText
Output
Data
Images
DataImagesSlides
Images
Skill level
Intermediate
Intermediate
Beginner-friendly
Intermediate
Categories
Productivity & OfficeAI Diagram Generator
Development & CodeProductivity & OfficeAI Developer ToolsAI Diagram Generator
Design & CreativeProductivity & OfficeAI ChartingAI Diagram Generator+3 more
Productivity & OfficeAI Diagram Generator
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
5
8
7
10
Diagrams
Diagram assistance
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Architectural diagramming
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Code diagramming
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Flowcharts
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Code visualization
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Data modeling
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Infographics
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–
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Mind maps
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–
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Charts
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Code documentation
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Data charts
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–
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Database design
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BPMN
–
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BPMN diagrams
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–
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Cloud diagrams
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–
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Code reviews
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Network diagrams
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–
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Onboarding tutorials
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Presentations
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Schema generation
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–
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UML diagrams
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–
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
▲ 0
▲ 0
Saves
0
0
0
0
Reviews
0
0
0
0
Prompts
0
0
0
0
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.