Dev tools · alternatives · 2026

24 alternatives to Nightingale

A fast, resource-efficient REST API client for Windows 10

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Nightingale launched in 2018; newer entries below may have overtaken it.

1. 1
   Sparrow▲456

   The lightest and fastest platform for API testing

   2025 · sparrowapp.dev · its alternatives →

2. 2
   Anything API▲656

   Hey HN! We built Notte, a browser infrastructure and agents platform. Many of our users automate UI workflows or extract data from sites that don’t have APIs. In practice, we noticed that once an agent understands how a site works, parts of the task can often run without a browser by interacting with the same network requests the site uses. So we built Anything API: describe a browser task, and our agent explores the site, builds a function, tests it against your description, and deploys a callable REST endpoint. No infra to manage. How the build works: - Describe the task (best results come…

   Mar 2026 · anything.notte.cc · its alternatives →

3. 3
   Hanabi.rest▲98

   Prompt to Backend API by AI with Playground

   2024 · hanabi.rest · its alternatives →

4. 4
   Karve▲71

   Not much to say. I work on windows, I hate postman, I need to manage bunch of .http files across multiple repositories. So I built a fast and native tool for myself and published it if you want to try it too. Any feedback would be nice, I really want it to be The obvious native Windows home for .http files

   Aug 2026 · karve.dev · its alternatives →

5. 5
   Insomnia REST Client now open-source▲218

   Leading Open Source API Development Platform for HTTP, REST, GraphQL, gRPC, SOAP, and WebSockets

   2017 · insomnia.rest · its alternatives →

6. 6
   Moon – fast 7k Vue alternative▲268

   🌙 The minimal & fast library for functional user interfaces - kbrsh/moon

   2017 · github.com · its alternatives →

7. 7
   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 →

8. 8
   Thunder Client▲246

   Rest API client for VS Code, lightweight Postman alternative

   2021 · thunderclient.com · its alternatives →

9. 9
   NativeRest▲136

   100% native, localfirst rest api client for mac, windows and linux. Supports multiple environmets, custom http methods, proxy server, offline mode and customizable themes. It's file first, you can import your collections and get started using NativeRest.

   2023 · nativesoft.com · its alternatives →

10. 10
    Beekeeper Studio – open-source, cross-platform SQL client▲343

    Modern, fast, and easy to use SQL GUI. Loads of supported databases & full feature parity across all OSes.

    2020 · beekeeperstudio.io · its alternatives →

11. 11IC
    I created Postwoman, an online, open-source API request builder▲280

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

    2019 · indiehackers.com · its alternatives →

12. 12
    Hypi▲113

    A low-code backend as a service to build GraphQL & REST APIs

    2020 · hypi.ai · its alternatives →

13. 13
    Tinybird▲176

    Turn raw data into realtime API at scale

    2021 · tinybird.co · its alternatives →

14. 14QG
    Quickly generate REST API (for Postgres db)▲70

    2019 · its alternatives →

15. 15
    Postman▲182

    Postman is a powerful HTTP client to test REST API

    2014 · postman.com · its alternatives →

16. 16TB
    Tabstack – Browser infrastructure for AI agents (by Mozilla)▲130

    Hi HN, My team and I are building Tabstack to handle the "web layer" for AI agents. Launch Post: https://tabstack.ai/blog/intro-browsing-infrastructure-ai-ag... Maintaining a complex infrastructure stack for web browsing is one of the biggest bottlenecks in building reliable agents. You start with a simple fetch, but quickly end up managing a complex stack of proxies, handling client-side hydration, and debugging brittle selectors. and writing custom parsing logic for every site. Tabstack is an API that abstracts that infrastructure. You send a URL and an intent; we…

    Jan 2026 · its alternatives →

17. 17
    BackAnt▲93

    Your browser-based Software Developer

    2025 · its alternatives →

18. 18
    A Fast HTTP Request CLI Powered by HTTL▲53

    First HTTP programming language

    2025 · httl.dev · its alternatives →

19. 19
    Multicolour▲99

    Stand a full featured REST API up in less than 5 minutes.

    2016 · github.com · its alternatives →

20. 20
    Restfox▲69

    Browser based HTTP client inspired by Insomnia and Postman

    2022 · restfox.dev · its alternatives →

21. 21
    RESTful Menu▲114

    A beautiful RESTful client right on the menu bar.

    2018 · its alternatives →

22. 22
    Franz – A desktop client for Apache Kafka▲45

    This is the source code to Franz, a native desktop client for Apache Kafka I've been working on for the past ~three years or so. Around 2021, I started using Kafka at a startup and I didn't like any of the clients that were available at the time, so I decided to build my own in my spare time[1]. I wanted a solid native experience on the Mac that wasn't web based and didn't require any Docker containers to run. A few months ago, I decided to make the code source-available[2] in part because I like the idea of my users being able to see the code they're running and in part because I want to…

    2024 · github.com · its alternatives →

23. 23
    Nightingale▲2

    Open-source alternative to Prometheus & Grafana

    2023 · github.com · its alternatives →

24. 24
    Speedy▲61

    The Backend you always wanted for your web and mobile apps..

    2023 · its alternatives →

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 →