FRequest is a fast, lightweight and opensource Windows / macOS / Linux desktop program to make HTTP(s) requests (e.g. call REST apis).
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Postman Alternatives
Postman is described as 'Collaborative platform for API development providing design, specifications, testing, documentation, and requests with free and paid subscription plans' and is a very popular API Client in the development category. There are more than 100 alternatives to Postman for a variety of platforms, including Windows, Mac, Linux, Web-based and SaaS apps. The best Postman alternative is Insomnia REST Client, which is both free and Open Source. Other great apps like Postman are NativeRest, Hoppscotch, HTTPie for Terminal and Bruno.
filter to find the best alternatives
Postman alternatives are mainly API Clients, but if you're looking for HTTP Clients or HTTP(S) Debuggers you can filter on that. Other popular filters include Open Source, Linux, Web Development, Online, Mac, Android and API Client. You can also filter by region, for example EU-based alternatives if you prefer software developed in the European Union. These are just examples - use the filter bar below to find more specific alternatives to Postman.
Alternatives list
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Cost / License
- Free
- Open Source (GPL-3.0)
Application type
Platforms
- Mac
- Windows
- Linux
- Google Chrome
- Chromium
- Firefox
HTTP API testing tool where you can create requests and mock existing API:s. After trial has expired you can still create requests.
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A self hosted service that exposes live data from APIs as files on a virtual network share. Providing automatic transformation of data to useful file formats while offering comprehensive security options.
Cost / License
- Paid
- Proprietary
Platforms
- Windows
- Linux
- Self-Hosted
- Docker
RequesterX is a free desktop HTTP client for API testing and development. Organize requests into nested collections, use environment variables for easy context switching, generate code snippets in 13 languages, and keep everything stored locally — no account required.
A fast Desktop API client. Design OpenAPI specs visually. Linear and Visual Flow runner. API testing with assertions. Debug with timing breakdowns — with HTTP/GraphQL/WebSocket/SSE support.
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Slingshot is a web-based HTTP request client that is highly performant, low on resources, privacy respecting, local-first, free and open-source. It stores all your data locally in your browser. It allows you to import and export OpenAPI specs and Postman collections.
Cost / License
- Freemium
- Open Source (AGPL-3.0)
Platforms
- Online
- Self-Hosted
Resonance is a local-first, zero-account API client application designed to provide an excellent user experience for testing and interacting with APIs. Built with Tauri, it offers a modern and intuitive interface for developers.
4 TiefWise alternativesA fast, lightweight REST API client for developers. Test, debug, and organize your APIs locally without cloud sync. Free
Cost / License
- Free
- Proprietary
Platforms
- Windows
- Mac
South Korea
Sweden
EU
United States
Free and open source multiplatform non-Electron app with dark theme.