Requestly vs Modheader
Requestly a better alternative to Mockoon
Looking for a versatile alternative to Mockoon? Requestly offers a lightweight, browser-based solution for intercepting, modifying, and debugging HTTP requests and responses, providing a seamless experience for developers working with APIs, mobile apps, and web services
Easy to Use
Enterprise Grade
Cloud Hosted Mocks
Best customer Support
Better Collaboration
Trusted by 200,000+ developers, from next-gen startups to Fortune 500 companies.
Simple, Fast & Powerful
Creating mocks in Requestly is very easy with cloud-based mocks. You don’t need to install any binary and mock works outside of your local system.
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Gentle Learning Curve
Requestly is designed from bottom up to maintain a shallow learning curve. Moreover a detailed documentation, a learning academy, interactive guides & video tutorials make you a power user from Day 1.
Completely external to Codebase
Using HTTP Rules Requestly can intercept and override actual APIs, resulting in zero code changes. Not even hostname change required. Active Toggle with HTTP Rules makes switching between Mock and Real APIs a piece of cake.
Collaboration
Requestly facilitates seamless team collaboration by allowing you to create shared workspaces and synchronize rules across team members. This ensures everyone has instant access to the established rules, eliminating duplicate work.
API Mock Collections
Collections of Mock APIs help group APIs and serve them from a single endpoint. This enables you to mock a service completely.
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Mock Server -> 
Pre-built Mocks
Pre-built Mocks help you setup a mock with any manual work. Mocks with different status codes can be easily configured using these pre-built mocks like 4xx, 5xx, 2xx, etc.
Best customer support
Requestly is known to provide the best customer support to its customers. Requestly has more than 1000 reviews on the Chrome Store testifying the best support from the Requestly team.
Enterprise Ready
Requestly is enterprise-ready software, prioritizing security and organizational control with features like SSO, Team Management, SLAs, SOC-II compliance, Reporting and analytics, and Role-based access control.
GraphQL Support
Exclusive support for GraphQL APIs is available in Requestly. Unlike Modheader, which is designed for REST APIs and struggles to handle GraphQL’s request structure. GraphQL relies on a schema-based approach, making it necessary to apply additional filtering to isolate specific operations within a request.
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Mock Server -> 
ModHeader vs Mockoon — detailed comparison
| Features | Mockoon | Requestly |
|---|---|---|
| Open Source | ||
| Lightweight | ||
| Faker | ||
| File Mocks | ||
| API Latency | ||
| Cloud Mocks | ||
| Offline Mocks | ||
| GraphQL support | ||
| Inject Scripts | ||
| Page level filters | ||
| Collaboration | ||
| Mock server | ||
| API client | ||
| Enterprise-ready | ||
| Support |
Built for teams
Effortless team collaboration
Share instantly, sync effortlessly, and collaborate effectively with your team in dedicated workspaces.
Secure and private
Enterprise-ready security and compliance
Requestly ensures top-tier security with SOC-II compliance, SSO integration, and role-based access control. We protect your data and secure your workflows, making us the ideal choice for enterprises.
Get Requestly Free for one year!
Requestly is an open-source Postman alternative with Interception & Mocking capabilities. Whether you’re building web, mobile, or backend applications, Requestly provides a powerful and versatile solution.
- Beautiful & Privacy-Friendly API Client – Supports Local-first, API Collections, Environments, Pre/Post-Request Scripts, and Team Workspaces.
- Intercept and Modify APIs – Capture API requests from browsers and mobile apps. Edit HTTP headers, request/response bodies, and params in real time.
- Mock APIs – Build frontend without waiting for backend APIs to be ready.
What is Non-Intrusive Mocks?
API Mocks created using Requestly can be combined with Modify API Response Rule to make non-intrusive mocks. Modify API Response can intercept your real API call and return the mock response. You can turn it off whenever your real API is ready.