Zaku Alternatives

Apps similar to Zaku include Bruno, which is open source with a free version. Other options are Postman, Insomnia REST Client, Yaak and ApiArk. There's no shortage of API Clients like Zaku, with more than 25 alternatives for Windows, Mac, Linux, the web and self-hosting.

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Alternatives
Zaku alternatives page was last updated

Alternatives list

  2. Hello HTTP icon

    Hello HTTP

     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

    Since

    • Since 2023

    Platforms

    • Mac
    • Windows
    • Linux
    Hello HTTP screenshot 1
    Good alternative?
     
  4. OlympAPI icon

    OlympAPI

     1 like

    Native API client for Windows & Linux — collections, environments, OpenAPI import, Git sync, request chaining, and response testing.

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Since

    • Since 2026

    Platforms

    • Windows
    • Linux
    • DE flagGermany
    • European Union flagEU
    Sending Request from Imported Collection - Dark Mode
    Good alternative?
     
  5. Ad
    Screenshot
    NativeRest icon
    NativeRest

    Native desktop app for Windows offers high-performance REST and HTTP API testing, low memory and CPU use, custom methods, portable version, proxy support, multiple environments, code generation, multilingual interface, and import...

    https://nativesoft.com
    Learn More
  6. KeyRunner icon

    KeyRunner

     1 like

    The Zero Trust API Client - A Secure & Free Alternative to Postman , Insomnia & Thunder Client.

    Cost / License

    • Freemium
    • Open Source (MIT)

    Application type

    Since

    • Since 2024

    Platforms

    • Mac
    • Windows
    • Visual Studio Code
    • US flagUnited States
    UI to Invoke requests (REST,gRPC,Graphql,Websockets)
    Good alternative?
     
  7. Lama2 icon

    Lama2

     2 likes

    Lama2 defines the human-friendly l2 syntax and CLI for describing and executing APIs. Store your APIs in plain-text files. Collaborate with team using version control (say, git). Run Lama2 directly from VSCode extension. Think of Lama2 as Markdown for APIs.

    Cost / License

    Application type

    Since

    • Since 2022

    Platforms

    • Mac
    • Windows
    • Linux
    Lama2 screenshot 1
    Good alternative?
     
  9. Postmate Client icon

    Postmate Client

     2 likes

    Free, privacy-first API client built natively into VS Code. Test REST, GraphQL & WebSocket APIs locally — no login, no cloud sync, no telemetry.

    Cost / License

    • Free
    • Proprietary

    Application type

    Since

    • Since 2026

    Platforms

    • Visual Studio Code
    • US flagUnited States
    Postmate Client request builder in VS Code with dynamic environment variables
    Good alternative?
     
  10. A

    Apiboo

     1 like

    Native desktop workspace for macOS, Windows, Linux combining REST and GraphQL API requests, Postman and OpenAPI import, PostgreSQL/MySQL/SQLite management, SSH/SFTP, encrypted vault for credentials, docs, Kanban boards, offline use, and integrated team chat.

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Since

    • New

    Platforms

    • Mac
    • Windows
    • Linux
    • AT flagAustria
    • European Union flagEU
    Apiboo screenshot 1
    Good alternative?
     
  11. Restretto icon

    Restretto

     1 like

    Minimal native and free REST API client for Mac.

    Cost / License

    • Free
    • Proprietary

    Application type

    Since

    • Since 2026

    Platforms

    • Mac
    Good alternative?
     
  12. RequesterX icon

    RequesterX

     2 likes

    RequesterX is a free desktop HTTP client for API testing and development. Organize requests into nested collections, use environment variables for easy context switching, generate code snippets in 13 languages, and keep everything stored locally — no account required.

    Cost / License

    • Free
    • Proprietary

    Application type

    Since

    • Since 2026

    Platforms

    • Mac
    • Windows
    • KR flagSouth Korea
    windows screenshot
    Good alternative?
     
  13. Routebase icon

    Routebase

     1 like

    Routebase keeps your API's design, docs, mock servers, contract tests and monitoring in one living OpenAPI spec so they can't drift apart.

    Cost / License

    • Freemium
    • Proprietary

    Since

    • Since 2026

    Platforms

    • Online
    • Software as a Service (SaaS)
    • Mac
    • Windows
    Design your OpenAPI spec in a visual editor — every change tracked.
    Good alternative?
     
  14. Step CI icon

    Step CI

     1 like

    Open-source API Test Automation framework.

    Cost / License

    Since

    • Since 2023

    Platforms

    • Self-Hosted
    Step CI screenshot 1
    Good alternative?
     
  15. Atrahasis icon

    Atrahasis

     Like

    Api client and Development Platform.

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Since

    • Since 2026

    Platforms

    • Windows
    • Mac
    • Linux
    • Global
    Atrahasis screenshot 1
    Good alternative?
     
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