Cost / License
- Free
- Open Source (GPL-3.0)
Application type
Platforms
- Mac
- Windows
- Linux
- Google Chrome
- Chromium
- Firefox
Insomnia REST Client Alternatives
Insomnia REST Client is described as 'A powerful REST API Client with cookie management, environment variables, code generation, and authentication for Mac, Window, and Linux' and is a very popular API Client in the development category. There are more than 100 alternatives to Insomnia REST Client for a variety of platforms, including Windows, Mac, Linux, Web-based and Google Chrome apps. The best Insomnia REST Client alternative is NativeRest. It's not free, so if you're looking for a free alternative, you could try Bruno or Postman. Other great apps like Insomnia REST Client are Yaak, Hoppscotch, HTTP Toolkit and Insomnium.
Alternatives list
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.
Routebase keeps your API's design, docs, mock servers, contract tests and monitoring in one living OpenAPI spec so they can't drift apart.
Cost / License
- Freemium
- Proprietary
Platforms
- Online
- Software as a Service (SaaS)
+2
Ain is a command-line HTTP API client. It's an alternative to postman, paw or insomnia. It enables scripting of input and further processing of output. It targets command-line users who work with API:s using a simple file format.
Cost / License
- Free
- Open Source (MIT)
Platforms
- Mac
- Windows
- Linux
- Raspberry Pi
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
APIBuilderHQ is a zero-friction alternative to heavy API clients like Postman. Built entirely for the browser — no desktop app, no mandatory accounts, no cloud sync. Your collections and request data stay in localStorage on your device.
A 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
APISpider is a lightweight API client for testing, debugging, and documenting REST APIs. It includes request history, collections, environment variables, mock servers, and API docs — all designed to keep your workflow fast and distraction-free.
ReqResp is a fast, lightweight, and modern API testing app designed for developers, testers, and backend engineers. It helps you create, send, and analyze HTTP requests with ease — anytime, anywhere.
+2
Native desktop workspace for macOS, Windows, Linux combining REST and GraphQL API requests, Postman and OpenAPI import, PostgreSQL/MySQL/SQLite management, SSH/SFTP, encrypted vault for credentials, docs, Kanban boards, offline use, and integrated team chat.
Cost / License
- Freemium
- Proprietary
Application types
Platforms
- Mac
- Windows
- Linux
+9
Cost / License
- Freemium
- Proprietary
Platforms
- Windows
- Mac
- Linux
+4
Cost / License
- Freemium
- Proprietary
Platforms
- Online
+2
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