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 Sep 30, 2026

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Apiboo
1 like
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 typeApplication types
Database Management Tool
API Client
Origin
Austria
EU
Platforms
Mac
Windows
Linux
Austria
EU
+9
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Good alternative?Is Apiboo a good alternative to Postman?
Postmate Client
2 likes
Free, privacy-first API client built natively into VS Code. Test REST, GraphQL & WebSocket APIs locally — no login, no cloud sync, no telemetry.
Cost / License
Free
Proprietary
Application typeApplication types
API Client
HTTP Client
Origin
United States
Platforms
Visual Studio Code
United States
+1
Good alternative?Is Postmate Client a good alternative to Postman?
CopiioAI
2 likes
Natural language interface for accessing internet data.
Cost / License
Free
Proprietary
Application type
API Client
Platforms
Google Chrome
Good alternative?Is CopiioAI a good alternative to Postman?
Ad
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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Restretto
1 like
Minimal native and free REST API client for Mac.
Cost / License
Free
Proprietary
Application typeApplication types
API Client
HTTP Client
Platforms
Mac
Good alternative?Is Restretto a good alternative to Postman?
RequesterX
2 likes
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.
52 RequesterX alternatives
Cost / License
Free
Proprietary
Application typeApplication types
API Client
HTTP Client
Origin
South Korea
Platforms
Mac
Windows
South Korea
Good alternative?Is RequesterX a good alternative to Postman?
BridgeLab
1 like
BridgeLab is an open-source desktop workbench to edit, validate and test HL7 v2 and FHIR messages — MLLP, HTTP, PHI masking, FHIRPath — offline.
Cost / License
Freemium
Open Source (MIT)
Application typeApplication types
API Client
HTTP Client
Origin
Italy
EU
Platforms
Mac
Windows
Linux
Italy
EU
+5
Good alternative?Is BridgeLab a good alternative to Postman?
Spec0
Like
Spec0 keeps your OpenAPI specs in one place and keeps them honest. Push specs from CI, the CLI or a GitHub app; Spec0 versions them, computes a change-log between versions, and blocks breaking changes on the pull request rather than after they ship.
Cost / License
Freemium
Open Source (MIT)
Origin
Germany
EU
Platforms
Mac
Windows
Linux
Germany
EU
Good alternative?Is Spec0 a good alternative to Postman?
Resonance API Client
Like
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.
Cost / License
Free
Open Source (MIT)
Application type
API Client
Platforms
Linux
Flathub
Flatpak
Mac
Windows
Snapcraft
Good alternative?Is Resonance API Client a good alternative to Postman?
TiefWise
Like
A fast, lightweight REST API client for developers. Test, debug, and organize your APIs locally without cloud sync. Free
Cost / License
Free
Proprietary
Origin
United States
Platforms
Windows
Mac
United States
Good alternative?Is TiefWise a good alternative to Postman?
RestRuno
Like
Fast, offline-first REST API client for testing and debugging APIs — no account, no cloud, collections stored as plain JSON files on your disk.
Cost / License
Freemium
Proprietary
Application type
HTTP Client
Origin
Ecuador
Platforms
Windows
Mac
Linux
Ecuador
Good alternative?Is RestRuno a good alternative to Postman?
APIBuilderHQ
Like
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.
Cost / License
Freemium
Proprietary
Application type
API Client
Origin
United States
Platforms
Online
United States
Good alternative?Is APIBuilderHQ a good alternative to Postman?
SpecBuildr
Like
A free AI interview that turns plain-English requirements into a build-ready manufacturing specification and flags what physics will not allow.
Cost / License
Free
Proprietary
Application type
CAD
Origin
United States
Platforms
Online
United States
Good alternative?Is SpecBuildr a good alternative to Postman?

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