Quartz is an open source, job scheduler for integration with stand-alone java applications and full-scale J2EE applications. Advanced features include clustering and participation in container managed transactions.

Quartz aims to be light-weight, scalable, and easy to use within your own applications.

It is in heavy use by hundreds (perhaps thousands) of developers, and is included in several other commercial and open source products.

The Quartz Project home page can be found at: OpenSymphony, so most of the documentation and other resources relating to Quartz can still only be found at the original Open Symphony..