Full Page Cache from the PageCache Enterprise module. Tag might also be used for CE FPC solutions, within the scope of the site (see tag wiki)
Magento Enterprise comes with a full page cache module with hole punching support.
Before you ask a question about third party Full Page Cache extensions, read this to be sure it won't be closed as off topic:
- Questions about extensions
- Can we start allowing questions about some of the famous third party extensions?
For questions about external full page cache using Varnish, see varnish