SoapUI / ReadyAPI vs Apidog

Free tier available

From $9 per user/month (Basic, billed annually; Professional $18, Enterprise $27)

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.

Priced noticeably below Postman for comparable team functionality.

SoapUI open source is free and covers SOAP and REST functional testing.

Free plan for small teams with core design, mock and test features.

Widely used

SmartBear · since 2005

Established

Apidog · since 2022

• 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.

• Schema-driven mocks and assertions stay correct as the API definition changes.
• Meaningfully cheaper than Postman for equivalent team features.
• One tool instead of three for design, mocking and documentation.

• 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.

• Younger vendor with a smaller community and fewer third-party integrations.
• Data residency and cloud storage need checking for regulated environments.
• Documentation quality is uneven in places.

Enterprises testing SOAP services, message queues and legacy integration layers.

Teams doing design-first API development who want mocks and docs generated from the spec.