Yjs CRDT vs Supabase: Which is Better in 2026?
Choosing between Yjs CRDT and Supabase 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.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Yjs CRDT
Build collaborative applications with shared data types that sync automatically and work offline.
Best for you if:
- • You need something completely free
- • You need developer tools features specifically
- • Enables real-time collaboration with automatically syncing shared data types.
- • Supports offline functionality and is network agnostic for decentralized systems.
Supabase
Open source Firebase alternative
Best for you if:
- • You need data & databases features specifically
- • Open-source Firebase alternative
- • PostgreSQL with real-time subscriptions
| At a Glance |  Yjs CRDT |  Supabase |
|---|---|---|
Starts at | Free | $25/moPro |
Best For | Developer Tools | Data & Databases |
Rating | - | - |
Choose Yjs CRDT or Supabase?
Choose Yjs CRDT if
Build collaborative applications with shared data types that sync automatically and work offline.
- Simplifies building complex real-time collaborative features
- Provides robust offline capabilities for uninterrupted user experience
- Flexible and scalable due to its network-agnostic and decentralized nature
- You want a fully free tool (Supabase requires payment)
- Your work is developer tools-shaped, not data & databases-shaped
Choose Supabase if
Open source Firebase alternative
- Full PostgreSQL access
- Generous free tier
- Open-source and self-hostable
- Your work is data & databases-shaped, not developer tools-shaped
| Feature | Yjs CRDT | Supabase |
|---|---|---|
| Pricing Model | Free | Freemium |
| User Rating | No ratings yet | ★4.7/5 33 reviews |
| Categories | Developer ToolsData & Databases | Data & DatabasesAPI Tools |
In-Depth Analysis
Yjs CRDT
Build collaborative applications with shared data types that sync automatically and work offline.
Strengths
- +Simplifies building complex real-time collaborative features
- +Provides robust offline capabilities for uninterrupted user experience
- +Flexible and scalable due to its network-agnostic and decentralized nature
- +Extensive ecosystem with many integrations and language bindings
- +High performance and fault tolerance
Weaknesses
- -Requires understanding of CRDT concepts for advanced use cases
- -While the library is free, some hosted services in the ecosystem may be paid
- -Initial setup and integration with specific frameworks might have a learning curve
Key features
Supabase
Open source Firebase alternative
Strengths
- +Full PostgreSQL access
- +Generous free tier
- +Open-source and self-hostable
- +Great developer experience
Weaknesses
- -Projects pause on free tier
- -Smaller ecosystem than Firebase
- -Less mature than alternatives
Key features
Pricing: Yjs CRDT vs Supabase
| Plan | Yjs CRDT | Supabase |
|---|---|---|
| Tier 1 | N/A | $0 Free |
| Tier 2 | N/A | $25 Pro |
| Tier 3 | N/A | $599 Team |
| Tier 4 | N/A | Custom Enterprise |
Pricing verified from each vendor's public pricing page. Compare in detail on Yjs CRDT pricing and Supabase pricing.
Who Should Use What?
On a budget?
Yjs CRDT is free. Supabase is freemium.
Go with: Yjs CRDT
Want the highest-rated option?
Neither has user reviews yet.
Go with: Yjs CRDT
Value user reviews?
Neither has user reviews yet.
Go with: Supabase
3 Questions to Help You Decide
What's your budget?
Yjs CRDT is free. Supabase is freemium. Go with Yjs CRDT if free matters most.
What's your use case?
Yjs CRDT is a developer tools tool. Supabase is in data & databases. Pick the category that matches your needs.
How important are ratings?
Neither has user reviews yet.
Key Takeaways
Supabase
- Free tier available
- Our pick for this comparison
Yjs CRDT
- Completely free
- Better fit for developer tools
The Bottom Line
Supabase is our pick. That said, Yjs CRDT is free, hard to beat on price.
Frequently Asked Questions
Is Yjs CRDT or Supabase better?
Supabase is rated in our evaluation. Yjs CRDT is free and Supabase is freemium.
What are Yjs CRDT and Supabase used for?
Yjs CRDT: Build collaborative applications with shared data types that sync automatically and work offline.. Supabase: Open source Firebase alternative.
What does Yjs CRDT cost vs Supabase?
Yjs CRDT is completely free. Supabase is freemium (free tier + paid plans). Visit their websites for detailed pricing.