Logwatch - Logwatch is a customizable log analysis system.
Wazuh - Open Source Host and Endpoint Security
Log Parser Lizard - Download this ETL log parser for automated SQL querying any text based data or system logs like Web Server logs, Windows System Events and application log files.
Beats - Beats is the platform for single-purpose data shippers that is installed as lightweight agents and send data to machines to Logstash or Elasticsearch.
BareTail - BareTail is a real-time log file monitoring tool. Features Real-time file viewing
Fluentd - Fluentd is a cross platform open source data collection solution originally developed at Treasure Data.