Open Source Fiddler Everywhere Alternatives
A curated collection of the 1 best open source alternatives to Fiddler Everywhere.
The best open source alternative to Fiddler Everywhere is Requestly. If that doesn't suit you, we've compiled a ranked list of other open source Fiddler Everywhere alternatives to help you find a suitable replacement.
Fiddler Everywhere alternatives are mainly API Development & Testing but may also be Browsers & Extensions. Browse these if you want a narrower list of alternatives or looking for a specific functionality of Fiddler Everywhere.
A Git-native desktop API client for designing, testing and sharing HTTP requests, with local, team-synced or self-hosted storage.
Requestly API Client is a desktop application for designing, building and testing APIs. Collections can stay in a local workspace, sync across a team, or live on a self-hosted deployment, so request data and secrets never have to sit in someone else's cloud by default.
One thing to establish before cloning. This repository is the community hub for the API Client, not its source: the application itself is proprietary, and the open source HTTP Interceptor extension and web app moved to a separate repository in the same organization, where they remain maintained.
The client covers the everyday shape of API work.
- REST playground: keep every request in one place and run them whenever you need to.
- Pre and post scripts: adjust a request before it is sent and process the response once it returns.
- GraphQL support: schema introspection and auto-completion when testing GraphQL endpoints.
- Import and export: pull in API contracts from cURL, Postman or OpenAPI in one step.
- Git sync: keep collections in a Git repository and collaborate through the review process you already use.
Builds exist for macOS on Apple Silicon and Intel, Windows and Linux. Use is free for up to ten collaborators, with team and enterprise tiers adding governance, SSO, SAML, audit logs and on-premise deployment. Bugs, feature requests and the roadmap stay public here even though the client code does not.
