A free, open-source Postman-style API tester you run locally. Record browser requests, auto-generate chained tests, and ship them straight to your CI—no sign-ups, no cloud, just code.
United States
KeyRunner Alternatives
KeyRunner is described as 'The Zero Trust API Client - A Secure & Free Alternative to Postman , Insomnia & Thunder Client' and is a API Client in the development category. There are more than 25 alternatives to KeyRunner for a variety of platforms, including Mac, Windows, Linux, Web-based and Google Chrome apps. The best KeyRunner alternative is Bruno, which is both free and Open Source. Other great apps like KeyRunner are Postman, Insomnia REST Client, Yaak and Hoppscotch.
Alternatives list
75 Advanced REST Client alternativesAPI testing tool. Which allows web developers to create and test custom HTTP requests.
Cost / License
- Free
- Open Source
Application types
Alerts
- Discontinued
Platforms
- Mac
- Windows
- Linux
- Chrome OS
- AppImageHub
- Google Chrome
- Chromium
29 xh alternativesxh is a friendly and fast tool for sending HTTP requests. It reimplements as much as possible of HTTPie's excellent design, with a focus on improved performance.
Cost / License
- Free
- Proprietary
Platforms
- Visual Studio Code
- Mac
- Windows
- Linux
+2
The API Astrolab enables today’s API-first companies to show their API products in a visual way so that anyone can understand how they work.
Cost / License
- Freemium
- Proprietary
Platforms
- Online
- Software as a Service (SaaS)
48 Stoplight alternativesStoplight is an API Design, Development, and Documentation platform that enables consistency, reusability, and quality, all with an easy, enjoyable developer experience.
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/export in light or dark themes.
+9
47 Apidog alternativesDesign and debug APIs in a powerful visual editor. Describe and debug easily with JSON Schema support. Apidog is a complete set of tools that connects the entire API lifecycle, helping R&D teams implement best practices for API Design-first development.
Cost / License
- Freemium
- Proprietary
Application types
Platforms
- Mac
- Windows
- Linux
- Online
+1
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
Cost / License
- Free
- Open Source (BSD-3-Clause)
Application types
Platforms
- Mac
- Windows
- Linux
- FreeBSD
- DragonFly BSD
- NetBSD
- OpenBSD
66 Thunder Client alternativesThunder Client is a hand-crafted lightweight Http Client extension for Visual Studio Code. No separate download needed, Just install the extension from VS Code marketplace.
Cost / License
- Free
- Proprietary
Application types
Platforms
- Mac
- Windows
- Linux
- Visual Studio Code
Used httpyac CLI tool underneath, which helps you execute _.http and _.rest files. This can be used to quickly execute a single *.http file, but also to execute all files in a folder. httpyac supports HTTP, Rest, GraphQL, WebSocket und gRPC...
Poland
EU
Singapore
