Top 21 free open source tools for System Log Analyzers for software engineers

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🔸 angle-grinder – slice and dice log files on the command line.
  🔸 lnav – log file navigator with search and automatic refresh.
  🔸 GoAccess – real-time web log analyzer and interactive viewer that runs in a terminal.
  🔸 ngxtop – real-time metrics for nginx server.

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