Parasoft Virtualize is a service virtualization product that can create, deploy, and manage simulated test environments for software development and software testing purposes.

[2] The product is used in conjunction with hardware/OS virtualization to provide developers and testers with the resources they need to execute their development and testing tasks earlier, faster, or more completely.

[4] In 2002, Parasoft released technology to "create service implementation stubs which emulate critical functionality that cannot be made available for testing.".

Since 2002, the technology was extended with "intelligent stubs [that] emulate the behaviour of a running system, allowing the developer to test services in the context of an application's actual behaviour and not on the live running system.".

[8] Parasoft created a free community edition in 2017 that allows individual users and small projects to use service virtualization at no cost.