Postman Alternatives

The top-rated alternative to Postman is Insomnia REST Client, which is open source with a free version. People also recommend Hoppscotch, HTTPie for Terminal, Bruno and soapUI. You're spoiled for choice with API Clients like Postman: we list more than 100 alternatives for Windows, Mac, Linux, the web and self-hosting.

filter to find the best alternatives

Most Postman alternatives are API Clients, but you can also narrow the list to HTTP Clients or HTTP(S) Debuggers. Other popular filters are Open Source, Web Development, Online, Android and Linux. You can also filter for EU-based alternatives if you prefer software from the European Union.

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Postman alternatives page was last updated Jul 20, 2026

Tiger API Client
6 likes
Free, open source, git-native API client. A local-first, account-free Postman alternative with a built-in MCP server, SOAP/GraphQL, request chaining and performance runs.
Cost / License
Free
Open Source (MIT)
Application type
API Client
Origin
France
EU
Platforms
Mac
Windows
Linux
France
EU
Good alternative?Is Tiger API Client a good alternative to Postman?
JSON API Tester
1 like
Lightweight alternative to Postman, written in Python / PyQt. Supports REST API and JSON RPC API.
Cost / License
Free
Open Source (GPL-3.0)
Platforms
Windows
Linux
Good alternative?Is JSON API Tester a good alternative to Postman?
HttpMaster
9 likes
Practical and easy-to-use software tool for testing HTTP applications and services.
66 HttpMaster alternatives
Cost / License
Free
Proprietary
Application typeApplication types
HTTP Client
API Client
Platforms
Windows
+7
Good alternative?Is HttpMaster a good alternative to Postman?
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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
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Stoplight
12 likes
Stoplight is an API Design, Development, and Documentation platform that enables consistency, reusability, and quality, all with an easy, enjoyable developer experience.
52 Stoplight alternatives
Cost / License
Freemium
Open Source
Application type
API Client
Origin
United States
Platforms
Mac
Windows
Linux
Online
United States
Good alternative?Is Stoplight a good alternative to Postman?

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1comment
Stoplight vs Postman Comments
Positive comment by Guest · Apr 1, 2017
simple ui get the response..!!!!
1 of 1 comments
Stoplight is Freemium and Open SourcePostman is Freemium and Proprietary
xh
11 likes
xh 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
Open Source (MIT)
Application typeApplication types
HTTP Client
API Client
Platforms
Mac
Windows
Linux
BSD
Good alternative?Is xh a good alternative to Postman?
Voiden.md
7 likes
Voiden.md is an offline-first, Git-native API workspace that unifies specs, docs, tests, and mocks using programmable Markdown blocks. Build APIs the way you actually work.
Cost / License
Free
Proprietary
Application type
API Client
Origin
Netherlands
EU
Platforms
Mac
Windows
Linux
Netherlands
EU
Good alternative?Is Voiden.md a good alternative to Postman?
Apidog
5 likes
Design 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.
54 Apidog alternatives
Cost / License
Freemium
Proprietary
Application typeApplication types
API Client
HTTP Client
Origin
Singapore
Platforms
Mac
Windows
Linux
Online
Singapore
+1
Good alternative?Is Apidog a good alternative to Postman?
Cartero
5 likes
Cartero is a graphical HTTP client that can be used as a developer tool to test web APIs and perform all kind of HTTP requests to web servers. It is compatible with any REST, SOAP or XML-RPC API and it supports multiple request methods as well as attaching body payloads to...
Cost / License
Free
Open Source (GPL-3.0)
Application type
HTTP Client
Origin
Spain
EU
Platforms
Linux
Windows
Flathub
Flatpak
Nix Package Manager
Mac
Spain
EU
Good alternative?Is Cartero a good alternative to Postman?
Kusho
3 likes
Never test your APIs manually again.
69 Kusho alternatives
Cost / License
Free
Proprietary
Origin
United States
Platforms
Visual Studio Code
Mac
Windows
Linux
United States
+2
Good alternative?Is Kusho a good alternative to Postman?
Reqable
5 likes
Reqable is a modern cross-platform project, designed for API development, testing, and debugging. Reqable fully supports HTTP1 and HTTP2 and partially supports HTTP3(QUIC).
Cost / License
Freemium
Proprietary
Application typeApplication types
API Client
HTTP Client
Platforms
Mac
Windows
Linux
Android
iPhone
Android Tablet
iPad
Flathub
Flatpak
+9
Good alternative?Is Reqable a good alternative to Postman?
Thunder Client
5 likes
Thunder 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.
70 Thunder Client alternatives
Cost / License
Free
Proprietary
Application typeApplication types
API Client
HTTP Client
Platforms
Mac
Windows
Linux
Visual Studio Code
Good alternative?Is Thunder Client a good alternative to Postman?

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2comments
Thunder Client vs Postman Comments
Negative comment by scottfrost · Jun 7, 2023
Pulled a bait and switch and now charges for basic features like the ability to sync via GIT
Positive comment by Ola Johansson · Jun 8, 2021
Nice extension to VS Code that can replace Postman or Insomnia.
2 of 2 comments
Thunder Client is Free and ProprietaryPostman is Freemium and Proprietary
Thunder Client is LightweightPostman is not according to our users
Kreya
3 likes
Kreya is a GUI client for gRPC, REST and WebSocket APIs with innovative features for environments, authorizations and more.
Cost / License
Freemium
Proprietary
Application typeApplication types
API Client
HTTP Client
Origin
Switzerland
Platforms
Mac
Windows
Linux
Switzerland
+1
Good alternative?Is Kreya a good alternative to Postman?

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