Top 9 APIs in API Testing

The best APIs within the API Testing category - based on our collection of reviews & verified products.

Product categories

AI API Management API Observability API Testing API Tools APIs Developer APIs Developer Tools Productivity Realtime Backend / API Tech Web Service Automation

Summary

The top products on this list are Postman, Thunder Client, and Swagger UI. All products here are categorized as: Tools and platforms for creating and using application programming interfaces. API Testing. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

Postman Landing Page
1

Postman

The Collaboration Platform for API Development
Pricing:
- Open Source
#API Tools #Developer Tools #APIs 30 social mentions
Thunder Client Landing Page

2

Thunder Client

Rest API client for VS Code, lightweight Postman alternative

#API Tools #Project Management #Developer Tools
Swagger UI Landing Page

3

Swagger UI

Swagger UI is a dependency-free collection of HTML, Javascript, and CSS assets that dynamically generate beautiful documentation from a Swag

#API Tools #Web Service Automation #Developer Tools 50 social mentions
Treblle Landing Page
4

Treblle

End to End APIOps Platform
Pricing:
- Open Source
- Freemium
- Free Trial
- $25.0 / Monthly (For 1 Workspace, 1 API, 250,000 Requests / mo)
#API Tools #Error Tracking #Realtime Backend / API 28 social mentions
Akana Landing Page

5

Akana

Akana provides a comprehensive suite of API management/security applications.

#API Tools #API Management #Web Service Automation
Ping-API Landing Page

6

Ping-API

Automated API testing and monitoring.

#API Tools #Developer Tools #Tech
TestMace Landing Page

7

TestMace

Powerful IDE to work with API.

#API Tools #Developer Tools #Tech
KushoAI Landing Page
8

KushoAI

AI agent to understand, write & execute tests for APIs in minutes
Pricing:
- Freemium
- Free Trial
#Productivity #API Tools #AI 1 social mentions
Firecamp Landing Page
9

Firecamp

Firecamp is a modern client for Real-time, GraphQL, REST and other 15+ routine tech stacks and platforms.
Pricing:
- Open Source
#API Tools #Realtime Backend / API #Developer Tools 5 social mentions

Recent APIs Posts

Best Postman Alternatives To Consider in 2025

hypertest.co // over 1 year ago

Postman Alternatives for API Testing and Monitoring

blazemeter.com // over 1 year ago

Top 20 Open Source & Cloud Free Postman Alternatives (2024 Updated)

medium.com // about 1 year ago

15 BEST SoapUI Alternatives (2022 Update)

guru99.com // about 3 years ago

15 Best Postman Alternatives for Automated API Testing [2022 Updated]

testsigma.com // about 3 years ago

Related categories

🔍 API Tools 💻 Developer Tools 💻 Tech 📂 Developer APIs 🌐 Web Service Automation

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If you want to make changes on any of the products, you can go to its page and click on the "Suggest Changes" link. Alternatively, if you are working on one of these products, it's best to verify it and make the changes directly through the management page. Thanks!