SoapUI is an open-source web service testing application for Simple Object Access Protocol (SOAP) and representational state transfers (REST).

A commercial version, ReadyAPI (formerly SoapUI Pro), which mainly focuses on features designed to enhance productivity, was also developed by Eviware Software AB.

[5] It is built entirely on the Java platform, and uses Swing for the user interface.

[6][7] SoapUI can test SOAP and REST web services, JMS, AMF, as well as make any HTTP(S) and JDBC calls.

[8] Core features include web services:[9] ReadyAPI is the commercial enterprise version.