Best API Clients for Postman

Compare the Top API Clients that integrate with Postman as of July 2026

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This a list of API Clients that integrate with Postman. Use the filters on the left to add additional filters for products that have integrations with Postman. View the products that work with Postman in the table below.

What are API Clients for Postman?

API clients are software tools or libraries that enable applications to communicate with APIs (Application Programming Interfaces) by sending requests and handling responses. They simplify the process of making authenticated calls, formatting requests, and parsing data returned from remote services. API clients often include features for error handling, retries, and rate-limiting to ensure reliable integrations. Many are available in multiple programming languages, making it easier for developers to interact with web services and backend systems. By abstracting the complexity of direct network communication, API clients accelerate development and help maintain clean, maintainable code. Compare and read user reviews of the best API Clients for Postman currently available using the table below. This list is updated regularly.

1

Testfully

Testfully

From powerful API client features to advanced testing and monitoring, Testfully does it all. Enjoy the flexibility of cloud and offline-only storage, seamless team collaboration, and easy migration, all in one multi-platform tool. Easily transfer your data from Postman or Insomnia directly into Testfully. Flexible and secure, set global, environment, and folder variables scoped to workspace or user. Customize auth, parameters, headers, and body to build any HTTP request easily. Work together effortlessly, add teams, assign roles, and control folder access. Supports major schemes like OAuth2 for secure and streamlined authorization. From basic to complex, Testfully enables quick, effective testing without the need for coding, making advanced API testing accessible and hassle-free. Execute all requests in a folder simultaneously, sequentially, or randomly with just one click. Validate responses and perform contract testing using a declarative format, no coding is needed.

Starting Price: $49 per month

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2

Hoppscotch

Hoppscotch LTD.

Hoppscotch makes it easy to create and test your APIs, helping you to ship products faster. Create APIs faster, test them instantly, document and share them automatically. From prototyping to production - develop without switching tabs. Hoppscotch got everything you need to make API development easy. Create workspaces for your teams. Control access to your workspaces. Work together with your team in real-time. Deploy Hoppscotch on your own servers. Organize your requests in collections or folders and share them with your team. Manage your environment variables and use them everywhere. View and manage your request history. Modify headers, authenticate requests, generate random data, and much more. Test your APIs and write assertions for the response. Use Hoppscotch in your native language. We support 30+ languages. Track all the activities in your workspace. Who did what and when. Use your existing SSO provider to login to Hoppscotch. Manage your users, workspaces, and more.

Starting Price: $19 per user per month

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3

Thunder Client

Thunder Client

Thunder Client is a lightweight REST API client extension for Visual Studio Code, designed to simplify API testing with an intuitive and user-friendly interface. It supports features such as collections, environment variables, and scriptless testing, allowing developers to organize requests, manage different environments, and validate API responses without the need for scripting. All data is stored locally on the user's device, ensuring privacy and security. Additionally, Thunder Client offers Git synchronization for team collaboration, enabling the saving and sharing of request data within a Git repository. Its CLI supports CI/CD integration, facilitating automated testing and report generation. Trusted by over 5 million users worldwide, Thunder Client seamlessly integrates into the VS Code environment, providing a streamlined workflow for API development and testing.

Starting Price: $3 per month

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4

Yaak

Yaak

Yaak is a fast, lightweight, and privacy-focused desktop API client designed for developers to test, debug, and interact with APIs in a clean and efficient environment without relying on cloud services. It works entirely offline, storing all data locally on the user’s machine with encrypted secrets and zero telemetry, ensuring full control over sensitive information and eliminating the need for accounts or external servers. It supports a wide range of protocols, including REST, GraphQL, gRPC, WebSockets, and Server-Sent Events, allowing developers to work with different types of APIs in a single interface. It includes features such as dynamic request templating with variables and functions, request chaining, and full debugging tools for inspecting headers, cookies, payloads, and responses. Yaak also integrates with Git by storing workspaces as plain files, enabling version control and collaboration while maintaining security through encrypted data handling.

Starting Price: $79 per year

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