The Best Postman Alternatives to Streamline API testing

Postman is an API platform for prototyping, documenting, and testing APIs in one single place. Its developer-friendly interface and comprehensive features make it a go-to tool for various businesses and teams.

Postman supports various authentication types, enables on-demand testing with minimal setup, and works well with platforms like SAP CAP and SAP Build Process Automation. Despite such advantages, it isn’t free of drawbacks.

For instance, the learning curve for advanced features, such as scripting in pre-request sections, can be steep, especially for solo developers or smaller teams. It can slow down or crash when handling extensive collections of datasets.

Postman consumes significant CPU and RAM as a desktop app, affecting overall system performance. Its data management and manipulation tools are limited, making it difficult to execute complex test scenarios. Plus, Postman doesn’t have offline functionality.

The good news is that plenty of alternative solutions offer faster performance, better integrations, or just a more straightforward experience.

All you need to do is find the right tool for your work. In this blog, we’ll discuss 15 Postman alternatives, their features, pros and cons, and pricing.

15 Best Postman Alternatives in 2025

1. TestGrid

TestGrid is an AI-powered end-to-end testing platform for web and mobile apps. It offers a secure and scalable test infrastructure for testing on real mobile devices and browsers through cloud services or on-premises setups.

TestGrid supports API testing, positioning itself as a dynamic Postman alternative for those looking to integrate automated testing into their CI/CD pipelines. Before running GUI tests, validating the app’s code-level functionality through API and backend testing is essential.

This helps catch subtle issues early in the development cycle, reducing the chances of critical failures during UI testing. The approach is beneficial if you work with an offshore QA team to test your API.

TestGrid allows you to test on actual remote devices, browsers, operating systems, and versions—ensuring high accuracy and consistency across test runs.

With quick alerts and faster debugging, you can prevent errors before they reach production, minimizing the Mean Time to Resolution (MTTR). One of TestGrid’s standout features is CoTester, the world’s first AI agent for software testing.

It’s pre-trained on SLDC and advanced software testing fundamentals and uses true AI to understand user intent without rigid syntax constraints. It creates detailed test case descriptions and comes with a step-by-step editor for automated workflows.

TestGrid features

• Test native, web, and hybrid apps on 1,000+ iOS and Android devices
• Validate functionality across APIs, UIs, servers, and databases, leading to improved product quality
• Evaluate app performance across devices with varying battery life, network conditions, and responsiveness
• Detect even the most minor visual deviations in your app with visual testing—no need to add any external SDK
• Record actions, create test scripts and automate tests in minutes with the intuitive ‘record and playback’ feature
• Set up Xray integration in minutes and view real-time execution statuses, timestamps, and downloadable reports directly inside JIRA
• Access remote devices using the Remote Lite feature, which provides instant connectivity via QR code or URL—only secure SSO authentication is required
• Scroll and swipe on remote iOS device with fewer touch points; replace full-screen gestures with simple taps, making the testing process faster and less tedious
• Leverage the Screen Broadcasting Turbo Mode to allow smooth, responsive remote access to iOS devices, even across continents and under low-bandwidth conditions

TestGrid pros

• It enables you to start testing instantly with a clean, intuitive interface that supports automation, performance tracking, and structured test case analysis
• It equips you to manage broader project tasks by logging bugs, assigning them to team members, taking sprint notes, and setting task reminders
• It preserves security and control with features such as SSO authentication, link expiration controls, and customizable access settings
• It’s perfect for testing content-heavy apps like those in gaming or media

TestGrid cons

• Since the platform offers a rich set of powerful testing features, it takes a bit of time to explore fully; however, the detailed documentation makes the learning curve manageable and the test process enjoyable

TestGrid pricing

• Freemium: $0 per month (200 minutes per 2 minute session)
• Manual Testing: $25 per month (5 users, 1 parallel test)
• End-to-End Automation: $99 per month (5 users, 1 parallel test)
• Private Dedicated: Starts from $30 per month (5 users, 1 dedicated device)
• Enterprise (On-premise/Hosted): Custom pricing

Also Read: TestGrid’s Latest Features

2. SoapUI

SoapUI is an open-source web service testing tool for Simple Object Access Protocol (SOAP) and representational state transfers. Its functionality covers web service inspection, development, simulation, mocking, load, and compliance testing. It’s particularly well-suited for complex enterprise environments that rely on legacy systems.

SoapUI features

• Create and run even the most complex scenarios with its drag-and-drop test creation
• Mimic your real web services without having to wait for them to be accessible or ready
• Perform load testing quickly and easily based on existing functional API tests

SoapUI pros

• There’s no need to build expensive full-scale replicas of your production
• It has a vibrant community and partner ecosystem, which fosters continuous innovation and learning

SoapUI cons

• Setting up and configuring the tool is intimidating for beginners
• As test suites grow in complexity, maintaining and updating test cases can be labor-intensive

SoapUI pricing

• Free to use, as it’s open-source

3. Apache JMeter

Apache JMeter is a 100% pure Java app designed to load test functional behavior and measure performance. It can simulate a heavy load on a server, group of servers, network, or object. It has a full-featured test IDE that allows fast test plan recording (from browsers or native apps), building, and debugging.

Apache JMeter features

• Perform load and performance tests for different apps, servers, and protocol types, including FTP, LDAP, TCP, and Java Objects
• Extract data from the most popular response formats, such as JSON, HTML, and XML, for easy correlation
• Save test results in various formats; analyze and replay them even when offline

Apache JMeter pros

• It offers complete portability and 100% Java purity
• It integrates with third-party open-source libraries for Jenkins, Gradle, and Maven

Apache JMeter cons

• Although JMeter looks like a browser, it isn’t and doesn’t perform all the actions supported by browsers
• It can indeed run out of memory when simulating high loads or using inefficient configurations

Apache JMeter pricing

• Free to use, as it’s open-source

4. Bruno

Bruno is a Postman alternative focused on testing local-first, file-based API collections. Developers who prefer version control and lightweight approaches will find this a handy tool. It’s fast and Git-friendly. Bruno is also known for its simple offline-only design.

Bruno features

• Use a plain text markup language called Bru to save information about API requests
• Store all your API collections (as text files) and configurations directly on your machine
• Can be installed via Homebrew, Chocolatey, Scoop, Snap, Flatpak, Apt, and Winget

Bruno pros

• It’s available in multiple languages, including English, German, Korean, Arabic, and Russian
• It does not require heavy memory usage or background processes

Bruno cons

• You can’t collaborate in real time unless you manually use Git to share collections
• It’s limited to REST APIs at the moment and doesn’t support GraphQL, WebSockets, and gRPC

Bruno pricing

• Free to use, as it’s open-source

5. Hoppscotch

Hoppscotch is a web-based API development suite. It was built with accessibility in mind, providing all the functionality needed for API developers with a minimalist and unobtrusive UI. This Postman alternative equips you to modify headers, authenticate requests, generate random data, and more.

Hoppscotch features

• Use the CLI to run your requests from the terminal; automate your workflow
• Generate code snippets for your requests in various languages and frameworks
• Handle different types of communication protocols beyond just standard HTTP requests, including GraphQL, Socket.io, and MQTT

Hoppscotch pros

• It’s built with performance in mind and is fast and reliable
• It allows you to track all the activities in your workspace

Hoppscotch cons

• Because of its focus on simplicity, it’s not apt for advanced testing scenarios
• Its documentation may not be as extensive or detailed compared to other Postman alternatives

Hoppscotch pricing

• Free: $0 per month
• Organization: $8 per month/user, billed monthly

6. cURL

cURL is a CLI tool and library perfect for scripting API requests and test automation. It supports a range of protocols, including FTP, SFTP, HTTP, HTTPS, and more. It helps developers and system administrators make API requests and inspect responses directly from the command line.

cURL features

• Minimize bandwidth usage by enabling data compression using formats such as gzip or deflate
• Fetch data from a URL (e.g., downloading web pages or files) or submit data (e.g., sending form data or interacting with APIs)
• Anonymize your IP, bypass geo-restrictions, or test how your apps perform in different locations by routing requests through a proxy server

cURL pros

• Getting help to use the tool properly isn’t a hassle; you can hire any skilled engineer to fix your cURL-related problems
• Its source code is easily compiled and built on almost any operating system and platform

cURL cons

• It’s targeted at single-shot file transfers and isn’t a wget clone
• It’s not an FTP site mirroring program, which means you’ll have to write a script for automated, systematic, and sequential FTP transfers

cURL pricing

• Free to use, as it’s open-source

7. Assertible

Assertible is a Postman alternative built for automated assertions, API health checks, and deployment testing. It provides a reliable first line of defense against web service failures, lowering the number of false positives in your automated QA tests and websites.

Assertible features

• Automatically sync your API tests with the latest changes in your specifications; add and update responses, headers, parameters, and so on
• Set up scheduled monitoring to continuously test your services and customize how you’re alerted about failures
• Create domain-specific tests using its powerful and robust HTTP assertions

Assertible pros

• It allows you to run your API tests against any environment, like staging or production
• It supports modern DevOps workflows like CI/CD pipelines

Assertible cons

• It demands a stronger understanding of API concepts and testing methodologies
• Scaling API testing with a large number of APIs and tests can become complex and potentially costly

Assertible pricing

• Personal: $0 per month (10 tests per service)
• Standard: $25 per month (500 tests per service)
• Startup: $50 per month (500 tests per service)
• Business: $100 per month (1,000 tests per service)

8. Firecamp

Firecamp is a multi-protocol API development platform built to simplify and streamline the process of testing and debugging APIs. It offers dedicated GUI playgrounds that help build APIs together faster. You can collaborate with your team on API collections as a Postman alternative.

Firecamp features

• Store values in variables and use them dynamically across different API requests or within Firecamp
• Test authentication (auth) mechanisms for API endpoints using various authentication methods
• Run API collection tests in the terminal or set in CI/CD pipelines

Firecamp pros

• It allows working on both web and desktop apps—whatever suits your API workflow
• It enables team collaboration in a centralized shared workspace

Firecamp cons

• It bundles the Chrome/V8 engine and Node.js, which increases the app size to 230MB+
• There’s limited community support compared to commercial Postman alternatives

Firecamp pricing

• Free: $0 per month (Up to 5 seats)
• Team: $59 per month, billed monthly (Up to 15 seats)

Also Read: GUI Testing Best Practices, Tools, and Checklists

9. Insomnia

Insomnia is a collaborative API development tool. A direct Postman alternative, it offers API request testing capabilities with a focus on a cleaner UI, better GraphQL support, and local-first storage. With Insomnia, you can create complex workflows, advanced tests, and dynamically generated data that can be injected into your requests.

Insomnia features

• As you create OpenAPI design specifications, see a live preview of the routes you’ve generated
• Log and inspect incoming calls to your custom endpoints by preserving the full history of requests that your API mocks receive
• Seamlessly integrate Insomnia with GitHub, Gitlab, Jenkins, Vercel, and more

Insomnia pros

• There’s no need to store data in the cloud; leverage Git as the backend storage option for your API data
• Reduce time to market and let Insomnia provide generated code snippets in popular languages like NodeJS, Go, Swift, and Python

Insomnia cons

• It’s resource-intensive and consumes a significant amount of memory and processing power
• It has limited support for performance and load testing

Insomnia pricing

• Hobby: $0 per month/user
• Pro: $12 per month/user
• Enterprise: $45 per month/user

10. APIDog

APIDog is an API development platform that provides a set of tools to connect the entire API lifecycle. It allows you to design and debug APIs in a powerful visual editor complete with JSON Scheme support. You can also publicly publish API documentation on custom domains or securely share it with collaborative teams.

APIDog features

• Share API docs as beautiful pages, supporting ‘try it out’ and example code; customize headers, layouts, and domains
• Generate API specifications directly from Javadoc comments and automatically synchronize them with the tool
• Retrieve data from databases such as PostgreSQL, MySQL, SQLServer, and Oracle

APIDog pros

• Explore 1,000+ public APIs worldwide in its API Hub; also publish your APIs
• It can run both public and directory-level scripts without any modifications

APIDog cons

• It doesn’t allow creating visual diagrams of your API interactions
• There’s no local repository storage, restricting offline access to API data

APIDog pricing

• Free: $0 per month/user
• Basic: $12 per month/user
• Professional: $24 per month/user
• Enterprise: Custom pricing

Also Read: Ensure a Pixel-Perfect User Experience with Visual Testing

11. Swagger UI

Swagger UI is a Postman alternative for API documentation and interactive testing. It helps visualize and interact with the API’s resources without having any of the implementation logic in place. Swagger UI is primarily used for OpenAPI (Swagger) specifications rather than general API development.

Swagger UI features

• Render your API specification visually and interact with your API while still defining it
• Generate client SDKs in 40+ different languages for end developers to easily integrate with your API
• Store your standard design components in dedicated stores called Domains with API Hub for Design that can then be referenced and reused across all your APIs

Swagger UI pros

• It’s interactively built; it lets you securely provide access to API documentation for external stakeholders
• It’s fully customizable, and you can tweak the dashboard the way you want

Swagger UI cons

• It struggles with API models that have cyclic dependencies, which can result in server crashes
• Its search functionality is less effective when an API has hundreds or thousands of operations

Swagger UI pricing

• Free to use, as it’s open-source

12. HTTPie

HTTPie is an open-source API testing client with a command-line interface that makes API requests more human-readable. It has a sleek graphical interface. This Postman alternative is used for testing REST, GraphQL, and HTTP APIs conveniently. It also shares detailed request statistics, such as headers, size, and time.

HTTPie features

• Auto-switch between GET and POST based on input
• Automatically separate GraphQL query and variables for better organization
• Define and manage URL path segments using form-based editing of query strings

HTTPie pros

• Its opinionated design makes sending REST JSON requests much easier
• It supports all HTTP methods, such as GET, POST, PUT, PATCH, DELETE, and OPTIONS

HTTPie cons

• It’s not typically pre-installed in most operating systems
• It isn’t as fast or reliable as other Postman alternatives

HTTPie pricing

• Free to use, as it’s open-source

13. Akana

Akana is an API management platform that can be deployed across multiple clouds, such as Kubernetes and Docker. A Postman alternative at the enterprise level primarily emphasizes API lifecycle management, security, and governance. You can integrate Akana with your CI/CD pipeline to accelerate API product delivery.

Akana features

• Design an API quickly with its graphical point-and-click editor
• Set it up in multiple cloud environments and switch from one cloud to another quickly
• Experiment with various API types, languages, and protocols, including RESTful, SOAP, and GraphQL APIs

Akana pros

• Security is automated with no coding required; it’s even PCI DSS-compliant
• Creating and deploying APIs with the tool is much faster compared to other Postman alternatives

Akana cons

• It lacks .NET core functionality that enables cross-platform testing support and language independence
• Integrating Akana with specific legacy systems or third-party tools

Akana pricing

• Free trial (for 30 days)
• Paid: Custom pricing

14. LoadNinja

LoadNinja is a load and performance testing tool that also helps stress-test APIs. This Postman alternative helps build and run performance tests without any complex correlation. By parameterizing tests, it enables rapid development without sacrificing quality or coverage.

LoadNinja features

• Leverage a private proxy to record load tests for internal apps, use a dedicated IP for your load tests, or whitelist dynamic IPs before you run your tests
• Get actionable insight in the form of browser-based navigation timings, response times, and network data to isolate and fix issues quickly
• Use real browsers at scale for load tests; get a realistic representation of load on the infrastructure supporting apps under test

LoadNinja pros

• It enables you to create even the most complex API and UI tests almost instantly
• No matter your skill level or experience in load testing, you can tap into the full potential of the tool comfortably

LoadNinja cons

• It’s not suitable for testing apps that use protocols other than HTTP/HTTPS
• It lacks robust reporting and analytics functionality

LoadNinja pricing

• Professional: $350 per 25 load testing hours (Test up to 500 virtual users)
• Enterprise: Custom pricing (Plans start at 25 hours)

15. Apigee

Apigee is a Postman alternative that offers API testing as part of a complete API management and analytics suite. A Google product, it can be applied in any use case, environment, or scale. It’s built on open standards, meaning you can access APIs and govern them consistently.

Apigee features

• Use auto-generated recommendations provided by Gemini to build assets like API proxies, integrations, or even plugin extensions that can be deployed to Vertex AI or ChatGPT
• Host and manage containerized runtime services in your own Kubernetes cluster for greater agility
• Turn your API specifications into proxies or extensions for your AI apps

Apigee pros

• It equips you to create consistent quality APIs without any specialized expertise
• You can minimize development time by generating mock servers for parallel development and collaborative testing

Apigee cons

• If your API proxy requires large configurations, multiple policies, or complex integrations, you may run into size constraints
• Since its pricing is linked to Google Cloud billing, enterprises using a different cloud provider might find cost management more complex

Apigee pricing

• Free (Get $300 in free credits to run, test, and deploy workloads)
• Paid: Custom pricing

Also Read: Best AI Testing Tools to Streamline Automation Efforts

Still Looking for API Testing Tools Like Postman?

Hopefully, this blog will help you stop your search.

As you can see, there’s no dearth of alternatives to Postman in the market. Before taking a call, you can either book a demo to see how a tool works or sign up for its free trial (provided that’s offered). Whatever you choose should be worth your time and effort and help you optimize your API testing initiatives.

However, if you want an all-in-one platform that minimizes test execution time with parallel testing, eliminates infrastructure setup through cloud-based automation, and supports multiple testing environments, then TestGrid is ideal.

Start your free trial with TestGrid today.

Frequently Asked Questions

1. How does API testing contribute to CI/CD pipelines?

API tests can be automated and integrated directly into CI/CD pipelines, enabling continuous validation of backend services with every deployment or build. This means you can catch regressions early and ensure consistent performance across environments without relying on manual testing.

2. How do you handle dynamic data in API testing?

Dynamic data can be managed using parameterization and data-driven testing approaches. This involves feeding external data sets into your test cases or using scripting to generate random or context-specific data, making your tests more flexible and scalable.

3. Can API testing improve security testing efforts?

Yes, API testing identifies vulnerabilities, such as improper authentication, excessive data exposure, or injection flaws. Automated API security tests help you enforce standards and reduce the risk of exposing sensitive data.