glogg - glogg is a multi-platform GUI application to browse and search through long or complex log files.
Fluentd - Fluentd is a cross platform open source data collection solution originally developed at Treasure Data.
BareTail - BareTail is a real-time log file monitoring tool. Features Real-time file viewing
Datadog - See metrics from all of your apps, tools & services in one place with Datadog's cloud monitoring as a service solution. Try it for free.
klogg - klogg is the fork of glogg - the fast, smart log explorer.
Splunk - Splunk's operational intelligence platform helps unearth intelligent insights from machine data.