---

OpenXES (pronounced as “open excess”) is a reference implementation of the XES standard for storing and managing event log data. Application domains of the XES standard , and the OpenXES library, are manifold. They include, but are not limited to monitoring of process-aware information systems, process mining and general process analysis, and data mining.

XES is an open standard for storing and managing event log data. The OpenXES library is a reference implementation of that standard in Java™ , which strives for strict XES compatibility, ease of development, and the best possible performance. OpenXES is released as open source / free software , under the terms of the GNU Lesser GPL (LGPL) license.

Both the XES standard and OpenXES have been designed with a tightly reduced, generally applicable core definition, with extensibility and generic applicability in mind. The XES standard provisions a generic extension system, which can be used to store data from arbitrary perspectives, or from specific application domains (e.g., for mapping corporate data models).