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All-in-one API platform to design, debug, mock, and test with CI/CD
Open-Source Projects
Discover top open-source software, updated regularly with real-world adoption signals.
Discover top open-source software, updated regularly with real-world adoption signals.
Local-first API client, interceptor, and mocking platform.
Requestly combines a Postman‑style API client, Charles‑like HTTP interceptor, and powerful mocking tools into a local‑first Chrome extension and desktop app, supporting environments, imports, and team collaboration.
When teams consider Requestly, these hosted platforms usually appear on the same shortlist.
Looking for a hosted option? These are the services engineering teams benchmark against before choosing open source.
Rapid Frontend Development
Mock backend endpoints locally, allowing UI work to continue while APIs are under construction.
Live Traffic Debugging
Intercept and modify HTTP requests from a web app to test feature flags or environment switches in real time.
Automated End‑to‑End Testing
Integrate Requestly’s mock server with Cypress to simulate API responses in CI pipelines.
Collaborative API Documentation
Share local workspaces via Git or Google Drive, enabling teammates to edit collections and environments together.
Yes, all core features—including the API client, interceptor, and local mocking—operate fully offline; only cloud mock hosting requires connectivity.
Chrome, Firefox, and Edge extensions are provided; they share the same rule engine.
Data is saved in a user‑chosen directory on the local file system; no telemetry is sent unless the optional cloud mock service is used.
Team workspaces can be synchronized through any file‑sync service such as Git, Google Drive, or iCloud, using the same folder.
Yes, the mock server can be started in headless mode and controlled via CLI or Node SDK for automated testing.
Project at a glance
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