Callista Component Tester Cost: $39 Get the full version     Trial version     Developer's Website Contacting third-party download site please wait. If your download does not start, click here, or get the full version Descriptions Callista Component Tester: The Callista Component Tester is a utility that allows you to dynamically invoke methods on any COM component. This tool takes away all the tedious work of writing simple test application to test functionality in components. By using this tool you can call virtually any method on any COM component.