Yjs CRDT vs Stream: Which is Better in 2026?
Choosing between Yjs CRDT and Stream 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.
Stream
Add chat and activity feeds to your app
Best for you if:
- • You need API tools features specifically
- • Stream is an API for building scalable chat and activity feeds
- • It provides real-time messaging with moderation and customization
| At a Glance |  Yjs CRDT |  Stream |
|---|---|---|
Starts at | Free | Free tier + paid plansFree tier available |
Best For | Developer Tools | API Tools |
Rating | - | - |
Choose Yjs CRDT or Stream?
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 (Stream requires payment)
- Your work is developer tools-shaped, not API tools-shaped
Choose Stream if
Add chat and activity feeds to your app
- Chat and activity feeds
- Good APIs
- Active development
- Your work is API tools-shaped, not developer tools-shaped
| Feature | Yjs CRDT | Stream |
|---|---|---|
| Pricing Model | Free | Freemium |
| User Rating | No ratings yet | ★4.5/5 75 reviews |
| Categories | Developer ToolsData & Databases | API ToolsCommunication |
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
Stream
Add chat and activity feeds to your app
Strengths
- +Chat and activity feeds
- +Good APIs
- +Active development
- +Good documentation
- +Scalable
Weaknesses
- -Expensive at scale
- -MAU-based pricing
- -Learning curve
- -Vendor lock-in
- -Feature complexity
Key features
Pricing: Yjs CRDT vs Stream
| Plan | Yjs CRDT | Stream |
|---|---|---|
| Tier 1 | N/A | Free Maker |
| Tier 2 | N/A | custom Scale |
| Tier 3 | N/A | custom Enterprise |
Pricing verified from each vendor's public pricing page. Compare in detail on Yjs CRDT pricing and Stream pricing.
Who Should Use What?
On a budget?
Yjs CRDT is free. Stream 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: Stream
3 Questions to Help You Decide
What's your budget?
Yjs CRDT is free. Stream is freemium. Go with Yjs CRDT if free matters most.
What's your use case?
Yjs CRDT is a developer tools tool. Stream is in API tools. Pick the category that matches your needs.
How important are ratings?
Neither has user reviews yet.
Key Takeaways
Stream
- Free tier available
- Our pick for this comparison
Yjs CRDT
- Completely free
- Better fit for developer tools
The Bottom Line
Stream is our pick. That said, Yjs CRDT is free, hard to beat on price.
Frequently Asked Questions
Is Yjs CRDT or Stream better?
Stream is rated in our evaluation. Yjs CRDT is free and Stream is freemium.
What are Yjs CRDT and Stream used for?
Yjs CRDT: Build collaborative applications with shared data types that sync automatically and work offline.. Stream: Add chat and activity feeds to your app.
What does Yjs CRDT cost vs Stream?
Yjs CRDT is completely free. Stream is freemium (free tier + paid plans). Visit their websites for detailed pricing.