Log management knowledge base

The Log Management Knowledge Base is a free database of detailed descriptions on over 20,000 event logs generated by Windows systems, syslog devices and applications. Provided as a free service to the IT community by Prism Microsystems, the aim of the Knowledge Base is to help IT personnel make sense of the large amounts of cryptic and arcane log data generated by network systems and IT infrastructures.

Source: Wikipedia — Log management knowledge base (CC BY-SA 4.0)