Web-based Postman Alternatives

There are many alternatives to Postman as a web app if you are looking for a replacement. The best Online alternative 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 many of them are available as a web app so hopefully you can find a suitable replacement. Other interesting Online alternatives to Postman are Requestly, Stoplight, Apidog and Restfox.

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Get a badge for your sitePostman alternatives page was last updated Oct 24, 2025

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.
81 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
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.
49 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
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.
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
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.
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?
Restfox
2 likes
Offline-first web HTTP client.
71 Restfox alternatives
Cost / License
Free
Open Source (MIT)
Application typeApplication types
API Client
HTTP Client
Platforms
Mac
Windows
Linux
Online
Docker
+5
Good alternative?Is Restfox a good alternative to Postman?
API Astrolab
1 like
The API Astrolab enables today’s API-first companies to show their API products in a visual way so that anyone can understand how they work.
Cost / License
Freemium
Proprietary
Origin
United States
Platforms
Online
Software as a Service (SaaS)
United States
Good alternative?Is API Astrolab a good alternative to Postman?
HTTPie for Web & Desktop
3 likes
All the user-friendliness of our Terminal version, now wrapped up in a sleek graphical interface.
Cost / License
Free
Proprietary
Application typeApplication types
HTTP Client
API Client
Origin
United States
Platforms
Mac
Windows
Linux
Online
Electron / Atom Shell
Flathub
United States
Good alternative?Is this a good alternative to Postman?
Treblle
3 likes
Treblle is a federated API Intelligence platform delivering full API visibility, security, and control from one integration point.
Cost / License
Freemium
Proprietary
Origin
Croatia
EU
Platforms
Mac
Windows
Online
Android
iPhone
Android Tablet
iPad
Software as a Service (SaaS)
Croatia
EU
Good alternative?Is Treblle a good alternative to Postman?
Firecamp
1 like
Firecamp's GraphQL playground is all in one GraphQL debugging tool which let you debug, collaborate and document your GraphQL APIs within a team for all platform.
Cost / License
Free
Open Source (AGPL-3.0)
Application typeApplication types
API Client
HTTP Client
Platforms
Online
Software as a Service (SaaS)
Self-Hosted
Good alternative?Is Firecamp a good alternative to Postman?
Guide API
Like
API integration platform for testing, prototyping, and running of any API flow. The right tool for successful API flow integration - nice, easy, simple, and cheap.
Cost / License
Paid
Proprietary
Origin
United Kingdom
Platforms
Online
Software as a Service (SaaS)
United Kingdom
Good alternative?Is Guide API a good alternative to Postman?
RestCase
1 like
RestCase is a security-focused API development platform that enables its users to rapidly create secure microservices, mock them in order to start testing, monitor APIs and collaborate on their development and testing.
Cost / License
Freemium
Proprietary
Application type
API Client
Platforms
Online
Good alternative?Is RestCase a good alternative to Postman?
EchoAPI
Like
EchoAPI is an all-in-one API development collaboration platform that offers essential features like API debugging, design, automated testing, stress testing, and documentation generation.
Cost / License
Freemium
Proprietary
Origin
United Kingdom
Platforms
Mac
Windows
Linux
Online
Google Chrome
Visual Studio Code
IntelliJ IDEA
Good alternative?Is EchoAPI a good alternative to Postman?

12 of 32 Postman alternatives