Can anyone let me know the customers using Integrity and how to find in a global Arena?

Hello Sridharan,

This is not an exhaustive list but there are some companies listed at the bottom of the ALM page on ptc.com:

http://www.ptc.com/application-lifecycle-management

As for how to contact companies globally, I would suggest looking into a PTC conference such as PTC Live Global. There are other similar PTC events around the world, so check the PTC LiveForum page for updates.