Postman AlternativesOnly apps categorised as HTTP(S) Debuggers

The best HTTP(S) Debugger alternative to Postman is Hoppscotch, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Postman and six of them are HTTP(S) Debuggers so hopefully you can find a suitable replacement. Other interesting HTTP(S) Debugger alternatives to Postman are Roster HTTP Client, Requestly, HttpMaster and Reqable.

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Most Postman alternatives are API Clients, but you can also narrow the list to HTTP Clients or HTTP(S) Debuggers. Other popular filters are Linux, Open Source, Web Development, Online and Android. 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 Jan 22, 2026

Hoppscotch
45 likes
Hoppscotch is an open-source API development ecosystem. It helps you create your requests faster, saving you precious time on your development.
90 Hoppscotch alternatives
Cost / License
Free
Open Source (MIT)
Application typeApplication types
API Client
HTTP Client
Origin
United States
Platforms
Online
Self-Hosted
United States
Good alternative?Is Hoppscotch a good alternative to Postman?

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3comments
Hoppscotch vs Postman Comments
Positive comment by notPlancha · Apr 8, 2025
Completely free, no account needed for anything, can be used on browser and even offers proxy
Positive comment by Guest · Oct 29, 2019
Helps you create your requests faster, saving you precious time on your development
Negative comment by Max Fisher · Sep 12, 2024
AFAIK, doesn't have a feature to import cURL from clipboard.
3 of 3 comments
Hoppscotch is Free and Open SourcePostman is Freemium and Proprietary
Hoppscotch is LightweightPostman is not according to our users
Roster HTTP Client
6 likes
HTTP client for GNOME featuring GTK 4 UI, organized project management, request history, secure environment variables, JavaScript scripts for preprocessing, export in cURL and more formats, syntax-highlighted response viewing, and advanced request customization.
Cost / License
Free
Open Source (GPL-3.0)
Application type
HTTP Client
Origin
Czechia
EU
Platforms
Linux
Flathub
Flatpak
GNOME
Czechia
EU
Good alternative?Is Roster HTTP Client a good alternative to Postman?
Requestly
34 likes
Requestly is a lightweight proxy available as a browser extension & desktop app to intercept & modify network requests. Using Requestly you can Modify Headers, Redirect Url, Mock API response, Delay/Throttle requests, etc.
54 Requestly alternatives
Cost / License
Freemium
Open Source
Application typeApplication types
HTTP(S) Debugger
Web Debugger
Origin
United States
Platforms
Mac
Windows
Linux
Online
Microsoft Edge
Google Chrome
Software as a Service (SaaS)
Selenium
Firefox
United States
+1
Good alternative?Is Requestly a good alternative to Postman?

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1comment
Requestly vs Postman Comments
Positive comment by Abhishek Sachan · Jan 24, 2025
Requestly = Postman + Charles Proxy.
1 of 1 comments
Requestly is Freemium and Open SourcePostman is Freemium and Proprietary
Requestly is an HTTP(S) Debugging Postman is an API Client
Requestly is LightweightPostman is not according to our users
HttpMaster
9 likes
Practical and easy-to-use software tool for testing HTTP applications and services.
Cost / License
Free
Proprietary
Application typeApplication types
HTTP Client
API Client
Platforms
Windows
+7
Good alternative?Is HttpMaster 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).
21 Reqable alternatives
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?
CurlHub.io
1 like
API Traffic Inspector.
Cost / License
Freemium
Proprietary
Application type
API Client
Platforms
Software as a Service (SaaS)
Good alternative?Is CurlHub.io a good alternative to Postman?

6 of 6 Postman alternatives