Cost / License
- Free
- Open Source
Platforms
- Linux
- Flathub
- Flatpak

Nightingale REST Client is described as 'A modern, resource-friendly REST client for Windows' and is a API Client in the development category. There are more than 25 alternatives to Nightingale REST Client for a variety of platforms, including Mac, Linux, Windows, Flathub and Flatpak apps. The best Nightingale REST Client alternative is Postman, which is free. Other great apps like Nightingale REST Client are Insomnia REST Client, Yaak, Hoppscotch and RapidAPI for Mac.

Resonance is a clean and minimal API client application designed to provide an excellent user experience for testing and interacting with APIs. Built with Electron, it offers a modern and intuitive interface for developers.

GetAPI is a native macOS app that simplifies REST API testing by allowing users to import from Postman, make HTTP requests, and view responses in a streamlined interface.




EchoAPI is an all-in-one API development collaboration platform that offers essential features like API debugging, design, automated testing, stress testing, and documentation generation.
Humlix shows you an easy way of generating tests for your web APIs. All you need to do is create a test request using the test request builder within Humlix and give an example of how your endpoints look and what type of data they want.
