View all API Testing / Quality Engineering Alternatives
Best Free Alternatives to ReadyAPI (formerly SoapUI Pro) 3.63
Stop paying Starting at $599/yr (per module). Discover professional-grade tools that won't break your budget.
Category: API Testing / Quality EngineeringVerified for 2025
Top Recommended Replacements
Postman v11
FREETop General Alternative
Why we like it
The industry standard; features 'PostBot' AI for automated test script generation; late 2025 update improved 'Warp Drive' for team syncing; excellent exploratory testing UI.
Keep in mind
The cloud-first approach has raised privacy concerns for some developers; lacks the deep 'one-click' security scans found in ReadyAPI.
Apidog
FREEBest All-in-One Alternative
Why we like it
Combines API documentation, mocking, and testing in one platform; extremely user-friendly UI; allows for 'Visual Assertions' without writing code; very cost-effective compared to SmartBear.
Keep in mind
Relatively newer to the market; community support for legacy SOAP protocols is smaller than SoapUI.
Bruno
FREEBest for Git-Native Teams
Why we like it
A 2025 breakout favorite; stores collections directly in your Git repo as plain text files; 100% offline-first; zero cloud bloat; fast and lightweight.
Keep in mind
Lacks the advanced GUI-based load testing and security vulnerability scanning of ReadyAPI.
Insomnia 10.x
FREEBest for GraphQL & Simplicity
Why we like it
Beautiful, minimalist interface; natively optimized for macOS M4 and Windows ARM; exceptional GraphQL support; strong plugin ecosystem.
Keep in mind
The 'Kong' ecosystem integration can feel heavy if you only need a simple client; fewer built-in reporting options.
Katalon Studio 10
FREEBest for End-to-End Workflows
Why we like it
Unique ability to combine API testing with UI (Web/Mobile) testing in the same project; features 'AI Self-Healing' similar to ReadyAPI; great for enterprise QA teams.
Keep in mind
High price for Pro features; proprietary engine can be restrictive for developers who prefer open-source scripts.
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