Fumadocs vs Eraser.io: Which Should You Choose in 2026?
Choosing between Fumadocs and Eraser.io comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
By Toolradar Team · Last updated February 28, 2026 · Methodology
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Fumadocs
Build beautiful, highly customizable documentation sites with React.js frameworks.
Best for you if:
- • You need something completely free
- • You need documentation features specifically
- • A React.js documentation framework for building highly customizable docs.
- • Supports Markdown and MDX with advanced features for diverse content creators.
Eraser.io
AI co-pilot for technical design and documentation, generating accurate, consistent designs faster.
Best for you if:
- • You want the higher-rated option (9.0/10 vs 0.0/10)
- • You need diagramming features specifically
- • AI-powered tool for generating and managing technical diagrams quickly and consistently.
- • Supports diagram-as-code, GitHub integration, and automated updates from Git repositories.
| At a Glance |  Fumadocs |  Eraser.io |
|---|---|---|
Price | Free | Free + Paid |
Best For | Documentation | Diagramming |
Rating | —/100 | 90/100 |
| Feature | Fumadocs | Eraser.io |
|---|---|---|
| Pricing Model | Free | Freemium |
| Editorial Score | — | 90 |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 0 | 0 |
| Categories | Documentation | DiagrammingDocumentation |
How Fumadocs and Eraser.io Compare
Fumadocs
Build beautiful, highly customizable documentation sites with React.js frameworks.
Free
Eraser.io
AI co-pilot for technical design and documentation, generating accurate, consistent designs faster.
Free tier available · 90/100 score
Fumadocs is a documentation tool. Eraser.io is in diagramming.
Who Should Use What?
On a budget?
Fumadocs is free. Eraser.io is freemium.
Go with: Fumadocs
Want the highest-rated option?
Eraser.io scores 90/100. Fumadocs is unrated.
Go with: Eraser.io
Value user reviews?
Neither has user reviews yet.
Go with: Eraser.io
3 Questions to Help You Decide
What's your budget?
Fumadocs is free. Eraser.io is freemium. Go with Fumadocs if free matters most.
What's your use case?
Fumadocs is a documentation tool. Eraser.io is in diagramming. Pick the category that matches your needs.
How important are ratings?
Not all tools have been rated yet.
Key Takeaways
Eraser.io
- Higher score: 90/100 vs unrated
- Free tier available
- Our pick for this comparison
Fumadocs
- Completely free
- Better fit for documentation
The Bottom Line
Eraser.io (90/100) is our pick. That said, Fumadocs is free — hard to beat on price.
Frequently Asked Questions
Is Fumadocs or Eraser.io better?
Eraser.io scores 90/100 in our evaluation. Fumadocs is free and Eraser.io is freemium.
What are Fumadocs and Eraser.io used for?
Fumadocs: Build beautiful, highly customizable documentation sites with React.js frameworks.. Eraser.io: AI co-pilot for technical design and documentation, generating accurate, consistent designs faster..
What does Fumadocs cost vs Eraser.io?
Fumadocs is completely free. Eraser.io is freemium (free tier + paid plans). Visit their websites for detailed pricing.