Applications and tools
SoapUI can be used to test web services.
It can import WSDLs and generated a template XML request which you can then edit, send to a server, and see the response.
Download the free testing software from Memtest86 and create a bootable image (CD or USB drive). Then boot from the image to test memory installed in a computer. Trial and error will tell you which memory DIMMs, or perhaps memory slots are defective.