pollyjs
The premium Open Source alternative to VCR
🎯 Best for:Web developers needing deterministic network testing.
What is pollyjs?
Replaces manual API mocking by recording and replaying network requests in the browser or Node.js. It provides a standalone server and client-side interceptors for consistent test environments across different frameworks.
Tech Stack
JavaScriptTesting & QA
Why pollyjs?
- • Framework agnostic
- • Supports HAR file format
- • Real-time recording
Limitations
- • Initial setup overhead
- • Large HAR file management
- • Limited to HTTP/HTTPS
3/5/2026
Last Update
355
Forks
56
Issues
Apache-2.0
License
Financial Leak Detected
Stop the "SaaS Tax"
Your team could be burning cash. Switching to pollyjs instantly boosts your runway.
Competitor Cost
-$1,440
/ year (est. based on VCR)
Self-Hosted
$0
/ year
Team Size10 Users
150+
SAVE 100%