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Dev tools · alternatives · 2026

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24 alternatives to I created Postwoman, an online, open-source API request builder

Postwoman 👽 - API request builder https://liyasthomas.github.io/postwoman Feel free to contribute on GitHub 💚 https://github.com/liyasthomas/postwoman...

Postwoman is an open-source API request builder available online, designed for developers who need to test and debug APIs. Launched in 2019, it provides a web-based interface for constructing and sending API requests… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier. I created Postwoman, an online, open-source API request builder launched in 2019; newer entries below may have overtaken it.

  1. 1

    API request builder - Helps you create your requests faster.

    2019 · postwoman.io · its alternatives →

  2. 2
    Postman▲182

    Postman is a powerful HTTP client to test REST API

    2014 · postman.com · its alternatives →

  3. 3

    Build, test, and document your APIs faster

    2016 · postman.com · its alternatives →

  4. 4

    Accelerate API development with Postman's all-in-one platform. Streamline collaboration and simplify the API lifecycle for faster, better results. Learn more.

    2017 · postmancollections.com · its alternatives →

  5. 5OS

    Hello! This is Jeane and Samuel and we’re building RecipeUI. RecipeUI is an open source Postman alternative that uses TypeScript to statically type and autocomplete requests. We built this because current API tools don’t deal with the fact that some APIs are just painful to work with. For us, it’s usually error after error as we try to figure out how to properly form the first request. We recorded a demo to show you how TypeScript helps us autocomplete a request correctly. https://youtu.be/O_Mly_p-g5s How does our platform improve the developer experience? The analogy is…

    2023 · recipeui.com · its alternatives →

  6. 6

    Last time I posted this it didn't garner much interest. There have been lots of improvements and fixes since the last release. Quick list of features: - Workspaces - Tabs - Nested Folders - Lots of context menus - Response history - Plugins - Runs fully in the browser and runs offline if necessary - Chrome and Firefox extension to bypass CORS restrictions - Desktop builds for all platforms - GraphQL support - Import collections exported from Postman and Insomnia - Simple user friendly interface I built this because I love Insomnia but wanted a portable version that I could run in the…

    2022 · restfox.dev · its alternatives →

  7. 7
    Apidog▲570

    Development teams often struggle with using multiple tools like Postman and Swagger for API design, development, and testing. This fragmented approach leads to outdated API specs and chaotic collaboration. So we built Apidog: a single, unified API platform for team collaboration. It has a beautiful interface that makes it easy to create API spec, generate request data from API spec, validate responses, create mock data, orchestrate test scenarios, and publish API documentation. Apidog = Postman + Swagger + Mock + JMeter.

    2024 · apidog.com · its alternatives →

  8. 8
    Elvafree tier, from $100/mo▲303

    Goodbye, Postman. Your APIs have new consumers

    Sep 2026 · getelva.ai · its alternatives →

  9. 9

    Idea to Postgres database

    2024 · supabase.com · its alternatives →

  10. 10

    Turn Figma designs into full stack apps with AI

    2025 · figma.com · its alternatives →

  11. 11

    Biggest library of ready-made API collections for Postman

    2017 · bubble.io · its alternatives →

  12. 12

    Open-Source Form Builder. Contribute to heyform/heyform development by creating an account on GitHub.

    2024 · github.com · its alternatives →

  13. 13
    APIsList▲293

    The updated list of the public APIs

    2022 · apislist.com · its alternatives →

  14. 14
    Sparrow▲456

    The lightest and fastest platform for API testing

    2025 · sparrowapp.dev · its alternatives →

  15. 15
    RecipeUI▲143

    Open source type-safe Postman alternative

    2023 · recipeui.com · its alternatives →

  16. 16
    Gradient▲153

    Developer API for building private LLMs that you own

    2023 · hyperagent.com · its alternatives →

  17. 17
    Fern▲260

    We built the world’s first generated, idiomatic gRPC and REST SDK. If you have public gRPC and REST endpoints, Fern is the SDK provider for you.

    2025 · buildwithfern.com · its alternatives →

  18. 18
    Postcat▲16

    A powerful open source, cross-platform API development tool.

    2024 · github.com · its alternatives →

  19. 19

    Hi HN! I just released version 1.0 of Posting, an open source terminal application I've been working on which you might find useful if you work with, test, or develop HTTP APIs! Posting (https://github.com/darrenburns/posting) is an HTTP client, not unlike Postman and Insomnia. However, as a TUI application, it works over SSH and enables efficient keyboard-centric workflows. Your requests are stored locally in simple readable YAML files, meaning they're easy to read and version control. Some other features include: - "Jump mode" navigation - Environments/variables…

    2024 · github.com · its alternatives →

  20. 20

    An open sourced free, fast and beautiful API request builder

    2019 · hoppscotch.io · its alternatives →

  21. 21

    Port OpenAPI Specs to Postman Collections, inject test suite and run via Newman 👨🏽‍🚀 - apideck-libraries/portman

    2021 · github.com · its alternatives →

  22. 22
    ApiHome▲73

    Home of API testing

    2022 · apihome.io · its alternatives →

  23. 23

    Organize and speed up API development work

    2018 · postman.com · its alternatives →

  24. 24

    Implement an invite list with in-built referral via POST API

    2020 · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →