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Top 10 API Client tools for developer in 2023.

See details of features and pricing of API Client developer tools. We're comparing best apps, libraries or tools for API Client such as Postman, Insomnia, Paw, Hoppscotch, Testfully, Thunder Client, apitester.org, HTTPie, SoapUI, Rapid API Hub to help you find your next API Client tool. .

If you know the best tool for API Client that not listed here,
please consider to submit it here.

๐Ÿค™๐Ÿฝ Skip to product:

  1. Postman
  2. Insomnia
  3. Paw
  4. Hoppscotch
  5. Testfully
  6. Thunder Client
  7. apitester.org
  8. HTTPie
  9. SoapUI
  10. Rapid API Hub

1. Postman

logo Postman


Postman is an API platform for building and using APIs. Postman simplifies each step of the API lifecycle and streamlines collaboration so you can create better APIsโ€”faster.

๐Ÿ›  Postman's Features

What can developer do with Postman

API repository

Easily store, catalog, and collaborate around all your API artifacts on one central platform. Postman can store and manage API specifications, documentation, workflow recipes, test cases and results, metrics, and everything else related to APIs.


The Postman platform includes a comprehensive set of tools that help accelerate the API lifecycleโ€”from design, testing, documentation, and mocking to the sharing and discoverability of your APIs.


The Postman platform gives you advanced intelligence and insights about all of your API operations by leveraging alerts and security warnings, search, reporting, and more.


Postman workspaces help you organize your API work and collaborate across your organization or across the world. There are three different kinds of Postman workspaces for your different needs: personal workspaces, team workspaces, and public workspaces.


Postman integrates with the most important tools in your software development pipeline to enable API-first practices. The Postman platform is also extensible through the Postman API and through open source technologies.

๐Ÿ’ฐ Postman's Pricing

How much does Postman cost?


All core tooling and collaboration for up to three users

Basic (12$/user/month)

  • Everything in Free, plus:
  • Unlimited collaboration for teams with 4 or more members
  • Collection recovery for 30 days
  • 1 custom domain
  • 10x calls to Postman API
  • 10 integrations

Professional (29$/user/month)

  • Everything in Basic, plus:
  • Single sign-on (SAML)
  • Collection recovery for 90 days
  • Basic roles and permissions
  • Private workspaces
  • Static IP addresses for API testing
  • 5 custom domains
  • 100x calls to Postman API
  • 50 integrations


  • Everything in Professional, plus:
  • Identity and access management, including user governance
  • Automated provisioning and deprovisioning via SCIM
  • Reporting and analytics
  • Deployment control
  • Private and partner* networks
  • 25 custom domains
  • 1000x calls to Postman API
  • 100 integrations, including Enterprise Integrations with GitHub and GitLab
  • Domain capture
  • Enterprise support and customer success
  • Custom payment options

2. Insomnia

logo Insomnia


Leading Open Source API Client, and Collaborative API Design Platform for REST, SOAP, GraphQL, and GRPC

๐Ÿ›  Insomnia's Features

What can developer do with Insomnia

Easily organize your requests

Everything begins here. Organize your requests to reflect your workflow or your API data-model. Group and order your API requests to your heart's desire.

Manage multiple environments

Define environment variables like authentication credentials, tokens, or session IDs for re-use globally or within a public / private environment for a seamless development / production workflow.

Multi-protocol Support

Create, organize, share and execute any REST, SOAP, GraphQL, GRPC requests directly from Insomnia without having to switch applications.

Develop faster with Code Generation

Reduce your time to market, and let Insomnia do the heavy lifting by providing you with generated code snippets in popular languages like Curl, NodeJS, Go, Swift, Python, Java, C, and more.

๐Ÿ’ฐ Insomnia's Pricing

How much does Insomnia cost?


  • API Client
  • API design
  • API Test

Individual 50$/user/Year

  • API Client
  • API design
  • API Test
  • Unlimited devices
  • E2EE Sync

Team 120$/user/Year

  • API Client
  • API design
  • API Test
  • Unlimited devices
  • E2EE Sync
  • E2EE Team Sync
  • User management

3. Paw

logo Paw


Paw is a full-featured HTTP client that lets you test and describe the APIs you build or consume. It has a beautiful native macOS interface to compose requests, inspect server responses, generate client code and export API definitions.

๐Ÿ›  Paw's Features

What can developer do with Paw

HTTP Client

Send all kinds of HTTP requests! Test and iterate on your own APIs or explore new ones. Paw has a full-featured visual editor and HTTP toolset.

API Description

Describe your API while you test it. Paw natively supports JSON Schema and is fully compliant with Swagger and RAML descriptions.


Keep everyone on the same page. Synchronize your API test configurations, make conflict-free changes and get real-time updates.

๐Ÿ’ฐ Paw's Pricing

How much does Paw cost?

Personal $49.99 (one time)

Forever license. Valid for one user, on up to 3 machines at a time.

4. Hoppscotch

logo Hoppscotch


Helps you create requests faster, saving precious time on development.

๐Ÿ’ฐ Hoppscotch's Pricing

How much does Hoppscotch cost?

Free and Open Source

5. Testfully

logo Testfully


Testfully is an automated API testing & monitoring tool

๐Ÿ›  Testfully's Features

What can developer do with Testfully

API Client

  • Customise request headers and body
  • Import from popular tools like Postman
  • Request chaining (multi-step requests)
  • Embed globals, environment variables, and fake data in requests
  • Organize requests using folders
  • Collaborate with your colleagues
  • Available as Desktop & Web app

API testing

  • Run on demand, integrate with your CI pipelines via Testfuly CLI, or run in Autopilot mode
  • Validate endpoint responses across multiple enviornments
  • Leverage Testfullyโ€™s API Client for defining test cases

API Monitoring

  • Monitor your API using existing requests
  • Run collections on-demand using our dashboard
  • Schedule collections for automatic execution
  • Access history of previous runs, automations and tests in one dashboard
  • Receive alerts as soon as your test cases fail

Config Management

Parameterize your requests & tests for maximum flexibility

Multi Environment Support

Send requests to localhost, Dev, Staging, and Prod APIs without changing your request body

๐Ÿ’ฐ Testfully's Pricing

How much does Testfully cost?

6. Thunder Client

logo Thunder Client

Thunder Client

Thunder Client is a hand-crafted lightweight Rest API Client extension for Visual Studio Code

๐Ÿ’ฐ Thunder Client's Pricing

How much does Thunder Client cost?


7. apitester.org

logo apitester.org


API Tester is a completely free mobile app available on iOS, Android, macOS and watchOS.

๐Ÿ›  apitester.org's Features

What can developer do with apitester.org

Perform all HTTP requests methods


Import requests or collections

Import by curl, link or file from your device. Swagger, OpenAPI, Postman, YAML collections supported.

Powerful GraphQL editor

Full-scale experience: body editor with Queries, Mutations, Subscriptions and syntax support; variables editor, documentation.

WebSocket testing tool

Handles connection and message exchange via WS or WSS.

Any kind of data encoding

Query params, URLEncoded params, FormData, raw data, send files from device storage, cloud, remote server.

Advanced settings

TLS can be skipped, redirects can be disabled, timeouts are adjustable, weak SSL verification is available.


Global variables, Folders, Run all requests at once, Apple Watch app, integration with Shortcuts & Widgets.

๐Ÿ’ฐ apitester.org's Pricing

How much does apitester.org cost?

All features are available for free

8. HTTPie

logo HTTPie


Making APIs simple and intuitive for those building the tools of our time.

๐Ÿ›  HTTPie's Features

What can developer do with HTTPie

  • Expressive and intuitive syntax
  • Formatted and colorized terminal output
  • Built-in JSON support
  • Forms and file uploads
  • HTTPS, proxies, and authentication
  • Arbitrary request data
  • Custom headers
  • Persistent sessions
  • Wget-like downloads
  • Linux, macOS, Windows, and FreeBSD support
  • Plugins
  • Documentation
  • Test coverage

9. SoapUI

logo SoapUI


Accelerating API Quality Through Testing

๐Ÿ›  SoapUI's Features

What can developer do with SoapUI

API Functional Testing

Functionality doesnโ€™t stop at the GUI level. Learn about how to make sure your API functions as intended, every time.

API Performance Testing

Performance is the bottom line of your API driven business. Load Test Virtual Users for your API and see how well it performs.

API Security

Worried about third party APIs, public APIs, or vulnerable internal APIs? Learn how to safely secure them all.

API Mocking

A properly designed, built and tested API can take valuable resources from your business. Save time and money with virtualization.

Data-Driven Testing

Test faster and smarter with data-driven testing, increasing your API testing coverage overnight.

Test Reporting

Need metrics, statistics and other testing data? Get detailed, comprehensive API test reporting to improve testing and measure success

๐Ÿ’ฐ SoapUI's Pricing

How much does SoapUI cost?

Screen Shot 2023-01-23 at 15.41.55.png

10. Rapid API Hub

logo Rapid API Hub

Rapid API Hub

Use Rapid API Hub to Find, Connect, & Share 1000s of APIs using our Multi-cloud platform. Improve Developer Experience with API Design, Testing, Monitoring, & More!

๐Ÿ›  Rapid API Hub's Features

What can developer do with Rapid API Hub


Find the API that works best for your project or application. With API Hub you have one location for all your APIs with no need to search multiple sites. Browse APIs by category, collection, or type by using the dropdown menu, search bar, or API Hub collections (a grouping of APIs based on similar or complementary functionality or use cases.)


Review API popularity score, average latency, and average success rate directly in the search results. Monitor API performance by visualizing how many requests are made to different APIs, tracking the number of requests that return.


In the API Hub, you can gather information about each API using the endpoints page to view a list of endpoints, documentation, and code snippets to help you implement the code into your app. Subscribe to API plans to start using it, and manage all your subscriptions and payments through the API Hub.

๐Ÿ’ฐ Rapid API Hub's Pricing

How much does Rapid API Hub cost?

No public pricing information

๐Ÿ‘‹๐Ÿฝ About API Client

API Client is a set of tools that allow programmers to interact with Application Programming Interfaces (APIs). This interaction can be in the form of reading or writing data. API Client allows programmers to work with APIs in a more efficient and effective way.

๐Ÿ‘‹๐Ÿฝ What is this page?

"What is the best API Client tool for developer? " Hope this page answering your question. This is a comparison page of recommended API Client coding tools, for developer by developer. Find your next top API Client alternative programming tools here. We list features and pricing with hope this resources can help you decide which API Client tools you need and best for your next project.

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