Insomnia REST Client Alternatives

Insomnia REST Client is described as 'A powerful REST API Client with cookie management, environment variables, code generation, and authentication for Mac, Window, and Linux' and is a very popular API Client in the development category. There are more than 100 alternatives to Insomnia REST Client for a variety of platforms, including Windows, Mac, Linux, Web-based and Google Chrome apps. The best Insomnia REST Client alternative is NativeRest. It's not free, so if you're looking for a free alternative, you could try Bruno or Postman. Other great apps like Insomnia REST Client are Yaak, Hoppscotch, HTTP Toolkit and Insomnium.

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Alternatives list

  1. Main goal of this VSCode extension is storing all HTTP request & response data automatically as files in a VSCode workspace.

    Cost / License

    • Free
    • Open Source (MIT)

    Application types

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
     
  2. API Test Base is a free, offline-first tool for testing APIs and their side effects — the records an API writes to a database, the messages it publishes to a queue, the downstream services it calls. Test cases are created with a no-code / low-code UI, and the same tests can be...

    Cost / License

    • Free
    • Proprietary

    Application types

    Platforms

    • Mac
    • Windows
    • Docker
    • Linux
     
  3. ReadMe icon
     4 likes

    ReadMe is a completely customizable and collaborative place for dynamic API and/or product documentation. Users can play around with the API right in the docs, automatically generated from a Swagger / OAS file. It also works as a knowledge base platform.

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Online
     
  4. HarborClient icon
     1 like

    HarborClient is a free, open-source desktop API client for macOS, Windows, and Linux. It gives you a familiar Postman-style workspace—collections, environments, request scripts, and a tabbed editor—while keeping your work on your machine or on storage you control.

    Cost / License

    • Free
    • Open Source (MIT)

    Platforms

    • Windows
    • Mac
    • Linux
     
  5. Api Quest icon
     1 like

    Api Quest is a desktop application designed for executing HTTP requests, storing them on the local file system, and providing portability. Whether you're a developer, QA or system engineer, this tool offers solution for handling HTTP requests effectively.

    Cost / License

    • Free
    • Proprietary

    Application types

    Platforms

    • Windows
    • Linux
     
  6. Slumber icon
     Like

    Slumber is a TUI (terminal user interface) HTTP client. Define, execute, and share configurable HTTP requests.

    Cost / License

    • Free
    • Open Source (MIT)

    Application type

    Platforms

    • Mac
    • Linux
    • Windows
     
  7. Hello HTTP icon
     1 like

    A cross-platform HTTP client desktop application for testing HTTP and REST APIs, WebSocket, GraphQL (including subscriptions) and gRPC endpoints.

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
     
  8. OpenReq icon
     2 likes

    Build, test, and debug your APIs with a self-hosted tool that does what you actually need. Scripts, environments, OAuth 2.0, code generation, and an AI wizard that builds collections from your docs — no account required, no limits.

    Cost / License

    • Free
    • Open Source (MIT)

    Platforms

    • Windows
    • Docker
    • Self-Hosted
     
  9. RawRequest icon
     1 like

    Keep your http requests in a single file that lives in your projects repo. This app lets you run your http requests from a .http file and includes features like load testing, pre and post request scripts, and request chaining.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
     
  10.  2 likes

    The modern API client that lives in your terminal.

    Cost / License

    Application types

    Platforms

    • Python
    • BSD
    • Linux
    • Mac
    • Windows
     
  11. Bootsmann icon
     2 likes

    Opensource C++ alternative to Postman/Insomnia/Hoppscotch for simple HTTP REST API testing.

    Cost / License

    • Free
    • Open Source (MIT)

    Platforms

    • Windows
     
  12. Nokori icon
     Like

    Nokori is the all-in-one platform for building, hosting, and growing your SaaS business. From Instant Microservices, Auth-as-a-Service, and Transactional Email, we give tech brands the tools they need to bring ideas to life quickly and easily, while providing seamless...

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Online
     
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