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Chapar

Native desktop API client for REST, gRPC, GraphQL and WebSocket that keeps all data local.

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Coding & WebOpen SourceWe checked the prices on github.com on 8 Nov 2026.

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What is Chapar?

Native desktop API client for REST, gRPC, GraphQL and WebSocket that keeps all data local.

Who is Chapar best for?

Chapar is best for backend developers who test REST, gRPC, GraphQL and WebSocket APIs and want a fast native app with local data.

  • gRPC services

    It calls gRPC with server reflection or proto files, alongside REST, GraphQL and WebSocket requests in one app.

  • Private API work

    Data stays on the device, secrets are encrypted with the operating system keychain and the app sends no telemetry.

  • Test suites in CI

    Requests chain into test cases with assertions and captures, and chapar-cli runs them in a CI pipeline.

  • Inspecting app traffic

    A built-in proxy shows the HTTPS traffic of other apps or phones and turns a captured call into a request, cURL command or HAR file.

How much does Chapar cost?

Chapar is free and open source under the BSD 3-Clause licence, with no paid plans or hosted service.

Free download$0Free forever, on your own computer
  • REST, gRPC, GraphQL and WebSocket
  • Python pre and post-request scripts
  • BSD 3-Clause licence

Chapar has no paid plans or hosted service; the project accepts sponsorships. Full pricing on github.com. We checked these prices on .

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Is Chapar open source?

Yes. Chapar's code is public under the BSD 3-Clause licence, so you can run it on your own server.

On GitHub

732stars

+18 (+2.5%) in the last 30 days

Last commit
4 Nov
Repository age
2 years
Latest release
4 Nov
Licence
BSD 3-Clause
Self-hosted
Yes
Run it yourselfThe code and the steps to put it on your own server are in its repository on GitHub.View on GitHub

What are the best Chapar alternatives?

Chapar is an open source alternative to Postman. Insomnia, Bruno, Hoppscotch and 2 more do the same job and are open source too.

Questions about Chapar

What is Chapar?

Native desktop API client for REST, gRPC, GraphQL and WebSocket that keeps all data local.

Who is Chapar for?

Chapar is best for backend developers who test REST, gRPC, GraphQL and WebSocket APIs and want a fast native app with local data.

Is Chapar free?

Yes. Chapar has a free Free download plan: REST, gRPC, GraphQL and WebSocket.

Is Chapar open source?

Yes. Chapar's code is public under the BSD 3-Clause licence, so you can run it on your own server.

What are the best Chapar alternatives?

The closest alternatives on Recaply are Postman, Insomnia, Bruno, Hoppscotch, Scalar and Voiden.

Where can I try Chapar?

On its official website, chapar.rest.

Can Chapar import Postman collections?

Yes. Chapar imports Postman collections, OpenAPI files, proto files and curl commands, and it saves requests and environments as YAML files you can keep in Git.