Requestly
Intercept & Modify HTTP Requests.
Overview
Requestly allows developers to intercept and modify HTTP requests and responses directly in the browser or via a desktop app. While not exclusively a mocking tool, its modification rules are powerful for simulating different API responses, testing edge cases, and developing frontends against APIs that are not yet ready.
✨ Key Features
- Modify headers, URL, and response body
- Redirect requests
- Insert custom scripts
- Mock API responses
- Session sharing for collaboration
🎯 Key Differentiators
- Easy-to-use UI as a browser extension
- Collaboration features like session sharing
- Focus on frontend development and testing workflows
Unique Value: Empowers frontend developers and QA to control and modify network requests directly, without needing backend changes or complex setups.
🎯 Use Cases (4)
✅ Best For
- Modifying API responses on the fly for frontend testing
- Redirecting API calls from production to a local development server
💡 Check With Vendor
Verify these considerations match your specific requirements:
- Backend integration testing
- Creating shared, persistent mock servers for teams
🏆 Alternatives
More user-friendly and collaboration-focused than traditional proxy tools like Charles or Fiddler.
💻 Platforms
✅ Offline Mode Available
🔌 Integrations
🛟 Support Options
- ✓ Email Support
- ✓ Live Chat
- ✓ Dedicated Support (Enterprise tier)
🔒 Compliance & Security
💰 Pricing
✓ 14-day free trial
Free tier: Limited number of rules and sessions
🔄 Similar Tools in API Mocking
Postman
A comprehensive platform for building and using APIs, including features for API mocking....
Stoplight
A collaborative API design platform with powerful mocking capabilities....
Mockoon
An open-source desktop application for creating mock APIs locally....
WireMock
A flexible, open-source tool for API mocking, running as a library or standalone server....
Beeceptor
An HTTP inspector and mocking tool for REST and webhook development....
MockServer
An open-source mocking tool that can be run as a server, library, or container....