Online 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 50 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, Restfox and Apidog.

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, Web Development, Linux, 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.

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Postman alternatives page was last updated Oct 24, 2025

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

|
3comments
39users say it's a good alternative
Comments about Hoppscotch as an Alternative to Postman

notPlancha
Positive commentApr 8, 2025
0
Completely free, no account needed for anything, can be used on browser and even offers proxy
Guest
Positive commentOct 29, 2019
3
Helps you create your requests faster, saving you precious time on your development
Review by a new / low-activity user.
Max Fisher
Negative commentSep 12, 2024
-1
AFAIK, doesn't have a feature to import cURL from clipboard.
Most users think Hoppscotch is a great Postman alternative.
Hoppscotch is the most popular Web-based & Self-Hosted alternative to Postman.
Hoppscotch is Free and Open SourcePostman is Freemium and Proprietary
Hoppscotch is LightweightPostman is not according to our users
Requestly
32 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.
30 Requestly alternatives
Cost / License
Freemium (Subscription)
Open Source
Application types
HTTP(S) Debugger
HTTP Client
Origin
United States
Platforms
Mac
Windows
Linux
Online
Microsoft Edge
Google Chrome
Software as a Service (SaaS)
Selenium
Firefox
+1
Is Requestly a good alternative to Postman?

|
1comment
Comments about Requestly as an Alternative to Postman

Abhishek Sachan
Positive commentJan 24, 2025
0
Requestly = Postman + Charles Proxy.
Review by a new / low-activity user.
Requestly is the most popular SaaS alternative to Postman.
Requestly is Freemium and Open SourcePostman is Freemium and Proprietary
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 (Subscription)
Open Source
Application type
API Client
Origin
United States
Platforms
Mac
Windows
Linux
Online
Is Stoplight a good alternative to Postman?

|
1comment
Comments about Stoplight as an Alternative to Postman

Guest
Positive commentApr 1, 2017
0
simple ui get the response..!!!!
Review by a new / low-activity user.
Stoplight is Freemium and Open SourcePostman is Freemium and Proprietary
Restfox
2 likes
Offline-first web HTTP client.
Cost / License
Free
Open Source (MIT)
Application types
API Client
HTTP Client
Platforms
Mac
Windows
Linux
Online
Docker
+5
Is Restfox a good alternative to Postman?
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.
42 Apidog alternatives
Cost / License
Freemium (Subscription)
Proprietary
Application types
API Client
HTTP Client
Origin
Singapore
Platforms
Mac
Windows
Linux
Online
+1
Is Apidog 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 (Subscription)
Proprietary
Origin
Croatia
EU
Platforms
Mac
Windows
Online
Android
iPhone
Android Tablet
iPad
Software as a Service (SaaS)
Is Treblle 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 (Subscription)
Proprietary
Origin
United States
Platforms
Online
Software as a Service (SaaS)
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 types
HTTP Client
API Client
Origin
United States
Platforms
Mac
Windows
Linux
Online
Electron / Atom Shell
Flathub
Is this 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 types
API Client
HTTP Client
Platforms
Online
Software as a Service (SaaS)
Self-Hosted
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
Subscription
Proprietary
Origin
United Kingdom
Platforms
Online
Software as a Service (SaaS)
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 (Subscription)
Proprietary
Application type
API Client
Platforms
Online
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 (Subscription)
Proprietary
Origin
United Kingdom
Platforms
Mac
Windows
Linux
Online
Google Chrome
Visual Studio Code
IntelliJ IDEA
Is EchoAPI a good alternative to Postman?

12 of 22 Postman alternatives