Varnish is a state-of-the-art, high-performance HTTP accelerator. Varnish is targeted primarily at the FreeBSD 6 and Linux 2.6 platforms, and will take full advantage of the virtual memory system and advanced I/O features offered by these operating systems.
This toolkit allows developpers to assemble several web applications into a single one. Pages are build using contents, resources and page templates coming from the original applications. The applications may use different technologies (Java, PHP...)