Postman AlternativesOnly Open Source apps categorised as API Clients - Page 2

The best open source API Client alternative to Postman is Insomnia REST Client. If that doesn't suit you, our users have ranked more than 50 alternatives to Postman and many of them are open source API Clients so hopefully you can find a suitable replacement. Other interesting open source API Client alternatives to Postman are HTTPie for Terminal, Hoppscotch, soapUI and Bruno.

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Postman alternatives are mainly API Clients but may also be HTTP Clients or HTTP(S) Debuggers. Filter by these or use the filter bar below if you want a narrower list of alternatives or looking for a specific functionality of Postman.

177

API Client
Freemium • Proprietary

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Postman is a tool that facilitates the development and use of APIs. Postman provides all the functionality needed to create or simulate API specifications and use the Postman Collection Runner to create tests.

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Postman alternatives page was last updated Oct 21, 2024

Yaak
10 likes
The API client for modern developers. Call REST, GraphQL, and gRPC APIs from a simple and intuitive app.
58 Yaak alternatives
License model
- Free • Open Source
Application types
- API Client
- HTTP Client
Platforms
- Mac
- Windows
- Linux
+1
Top Yaak Features
1. Autocompletion
2. Lightweight
3. Ad-free
4. Privacy focused
5. Dark Mode
6. GraphQL API
7. Support for Themes
8. Works Offline
9. No registration required
10. Syntax Highlighting
11. Portable
12. Variables
Yaak VS Postman
Is Yaak a good alternative to Postman?

RecipeUI
4 likes
RecipeUI is rethinking how we use API tools like Postman or Insomnia. We're starting off with TypeScript powered API requests and API collections you can run in seconds!
66 RecipeUI alternatives
License model
- Free • Open Source
Application type
- API Client
Platforms
- Linux
- Mac
- Windows
RecipeUI Features
REST API
Development API
API Management
Discontinued
The GitHub repository has been archived in February 2024.
RecipeUI VS Postman
Is RecipeUI a good alternative to Postman?

xh
9 likes
xh is a friendly and fast tool for sending HTTP requests. It reimplements as much as possible of HTTPie's excellent design, with a focus on improved performance.
24 xh alternatives
License model
- Free • Open Source
Application types
- API Client
- HTTP Client
Platforms
- Mac
- Windows
- Linux
- BSD
xh Features
1. Command line interface
2. REST Client
3. Lightweight
4. Web Testing
5. REST API
6. Support for Unicode
7. Data transfer
xh VS Postman
Is xh a good alternative to Postman?

Requestly
28 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.
27 Requestly alternatives
License model
- Freemium • Open Source
Application types
- HTTP(S) Debugger
- API Client
Platforms
- Mac
- Windows
- Linux
- Online
- Microsoft Edge
- Google Chrome
- Software as a Service (SaaS)
- Selenium
- Firefox
+1
Top Requestly Features
1. Intercepting HTTP calls
2. Requests monitoring
3. Bug reporting
4. Web page Debugging
5. One click interception
6. Android Development
7. Lightweight
8. Ad-free
9. Dark Mode
10. Real time collaboration
11. No Coding Required
12. Command line interface
Requestly VS Postman
Is Requestly a good alternative to Postman?
- 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

Chapar
Like this app
Upcoming API testing tool in beta, built in GoLang, supporting HTTP/gRPC, workspaces, environments, request management, and various content types. Features include dark mode, local data storage, Postman import, environment variable setting, and request chaining.
52 Chapar alternatives
License model
- Free • Open Source
Application types
- API Client
- HTTP Client
Platforms
- Mac
- Windows
- Linux
+4
Chapar Features
1. Privacy focused
2. No Tracking
3. Ad-free
4. No registration required
5. Dark Mode
6. Local Storage
7. REST API
8. Security-focused
9. HTTP Testing
10. API Testing
Chapar VS Postman
Is Chapar a good alternative to Postman?

Hurl
7 likes
Hurl is a command line tool that runs HTTP requests defined in a simple plain text format. It can capture values, evaluate queries on headers and body response. It is very versatile: it can be used for both fetching data and testing HTTP sessions.
33 Hurl alternatives
License model
- Free • Open Source
Application types
- API Client
- HTTP Client
Platforms
- Mac
- Windows
- Linux
Hurl Features
1. Command line interface
2. Lightweight
3. Portable
4. Cross-Platform
5. REST API
6. API Integration
Hurl VS Postman
Is Hurl a good alternative to Postman?

ArdorQuery
Like this app
ArdorQuery is a cross-platform tool for performing any HTTP(S) endpoints like REST API, HTML, Images, GraphQL, OData etc.
51 ArdorQuery alternatives
License model
- Free • Open Source
Application types
- API Client
- HTTP Client
Platforms
- Mac
- Linux
- Flathub
ArdorQuery Features
REST API
QA Automation
ArdorQuery VS Postman
Is ArdorQuery a good alternative to Postman?

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