SuperTest vs SoapUI / ReadyAPI
Feature checklists rarely decide anything. What decides it is the pricing metric, who has to write the tests, and which limitation you can live with.
Entry price
Free and open source
Open sourceFree tier available
Free tierWhat drives the bill
The metric that actually scales your invoice.
Free and open source. You pay in engineering time and CI minutes.
SmartBear publishes no ReadyAPI price; the pricing page is a quote request. ReadyAPI is licensed per module — Test, Performance, Virtualization — and buying all three multiplies the cost, with floating licences for CI costing more than fixed seats.
Free tier
Everything, self-hosted
SoapUI open source is free and covers SOAP and REST functional testing.
Open source
MIT
EUPL-1.1 (SoapUI open source)
Self-hostable
No-code authoring
Languages
Platforms
Fits teams
Adoption
Widely used
OSS community · since 2014
Widely used
SmartBear · since 2005
Strengths
- Fast: no network, no separate server process, no port conflicts in CI.
- Tiny API you can learn in ten minutes.
- Works with whichever runner you already use.
- Unmatched SOAP, WSDL and JMS support for legacy enterprise integration work.
- ReadyAPI bundles functional, security, load and virtualisation in one product family.
- Groovy scripting escape hatch for anything the GUI cannot express.
Limitations
- Node.js only, and only for services you host yourself.
- In-process testing skips the real network stack, proxies and load balancer.
- No environment management or collection concept for cross-service flows.
- Dated Java desktop UI that feels heavy next to modern clients.
- Project files are XML and merge badly in version control.
- Modular licensing gets expensive fast.
Best for
Node.js API projects testing their own routes in the unit/integration layer.
Enterprises testing SOAP services, message queues and legacy integration layers.
Pricing last reviewed August 2026 and is indicative only — confirm on each vendor’s own page.