LogMX - LogMX is an intuitive and cross-platform tool for developers and administrators to analyze log files.
glogg - glogg is a multi-platform GUI application to browse and search through long or complex log files.
OtrosLogViewer - OtrosLogViewer is a software for analyzing an application's logs and stack traces.
Circonus - Circonus combines multiple monitoring, alerting, event processing, and analytics tools into one unified solution.
WTF Auto Layout? - Make sense of cryptic Auto Layout error logs.
Splunk - Splunk's operational intelligence platform helps unearth intelligent insights from machine data.