Requestly is an open-source API client and HTTP interceptor for testing APIs. It modifies network requests, mocks APIs, and runs collections, with desktop apps for macOS, Windows, and Linux plus a browser-extension interceptor. Its canonical repository is requestly/requestly, and it positions itself as a privacy-first Postman alternative with one-click Postman import.[1][2][3][4]
Quick verdict
Requestly suits API teams and frontend developers who want an open-source client plus HTTP interception with a documented path off Postman. Its evidenced strengths are request modification, mocking, multi-protocol support, and collection runs. Self-hosting, public API, and data residency are unknown from the inspected evidence. Check current pricing and the enterprise path before committing a team.[1][2][3][4]
What Requestly does
Intercept and modify live HTTP requests, headers, and API responses in the browser and desktop apps without proxy setup.[1][2]
Mock API responses and redirect requests across environments during development and debugging.[1][2]
Send and test REST, GraphQL, gRPC, WebSocket, and MQTT requests from one multi-protocol API client.[1]
Run API collections with the collection runner and CLI, including runs in continuous integration.[1]
Import Postman collections, folders, and environments in one click when migrating off Postman.[1][2]
Keep work in local projects stored as files on disk and collaborate through shared, synced team workspaces with roles.[1]
Who will love it
API development and testing teams that need a client, mocks, and collection runs in one workflow.[1][2][3]
Frontend developers debugging network traffic directly in the browser via the HTTP interceptor.[1][2]
Teams migrating Postman collections and environments who want a documented one-click import path.[1][2][3]
Known limitations and unknowns
Self-hosting is unknown: it is mentioned only via the enterprise sales path and no documented self-host procedure was inspected.[1]
A public API is unknown: the CLI runs collections in CI, but no documented public API was inspected.[1]
Data residency is unknown: no documented region or data-location options were inspected on the official pages visited.[1][2]
Compatibility and migration
Runs as desktop apps for macOS, Windows, and Linux, in the browser via extension, and on the web, with adoption as easy as installing the app or extension.[1][2]
Fits Postman-centered workflows: the official site hosts a Requestly-vs-Postman comparison and a one-click importer for Postman collections and environments.[1][2][3]
Postman is the evidenced incumbent: Requestly describes itself as the privacy-first Postman alternative and backs the substitution with a comparison page and importer, not inferred category overlap.[1][2][3]
Questions worth asking
How much does Requestly cost per month?
The pricing page offers a free start with a 30-day trial and no credit card required, and a Team plan at $10 per user per month billed annually. Verify the current pricing page before budgeting, as plans may have changed since observation.[1]
Can Requestly be self-hosted?
Is there a Requestly alternative for non-technical users?
The inspected evidence describes a developer tool for API testing and HTTP traffic debugging, with no evidence of a non-technical audience. Non-technical users needing to inspect or mock APIs would likely need developer help; no suitable non-technical alternative was evidenced in this intake.[1][2][3]
Sources and editorial review
Source research. Reviewed on October 12, 2026. Written by Sanjib Sah. AI assisted; reviewed by a human editor.
We have not run or tested this product.
- Requestly homepage
official · Observed October 12, 2026
Official homepage: AI-first API platform to design, build, and test APIs; hosts a Requestly-vs-Postman comparison, one-click Postman import, environments, collection runner, CLI, team workspaces, local projects, and enterprise security.
- Requestly HTTP Interceptor product page
official · Observed October 12, 2026
Official HTTP Interceptor product page: describes an open-source tool to intercept and modify network requests, headers, and API responses; links Open Source to github.com/requestly/requestly.
- Requestly pricing
official · Observed October 12, 2026
Official pricing page: start free with a 30-day trial and no credit card; Team plan at $10/user/month billed annually covering the multi-protocol API client, local projects, and collaboration.
- Requestly downloads
official · Observed October 12, 2026
Official downloads page: desktop-first API client with macOS, Windows, and Linux builds; HTTP interceptor remains available as a browser extension.
- Requestly enterprise security
official · Observed October 12, 2026
Official enterprise security page: SOC 2 Type II, SAML single sign-on with Okta and Microsoft Entra ID, RBAC, encryption in transit and at rest, and audit logs, with a talk-to-sales path.
- requestly/requestly on GitHub
official · Observed October 12, 2026
Canonical GitHub repo requestly/requestly: self-described community hub for the Requestly API Client and privacy-first Postman alternative; homepage field points to requestly.com.
- requestly/requestly LICENSE
official · Observed October 12, 2026
Repository LICENSE text: content outside the ee directory available under GNU AGPLv3.
- requestly/interceptor README
official · Observed October 12, 2026
requestly/interceptor README: open-source HTTP interception and traffic debugging tool for browsers and desktop apps; request/response modification, API mocking, and environment overrides without proxy setup.
- requestly/interceptor repo metadata
official · Observed October 12, 2026
GitHub API metadata for requestly/interceptor: primary language TypeScript; topics include http-interceptor, mock-server, charles-proxy, and fiddler.