Apps to Web log analysis

AWStats is a free, open-source web analytics tool that analyzes server log files to generate detailed reports on website visitor statistics. It provides insights into traffic sources, visitor origins, used browsers, operating systems, and other key metrics, making it a valuable resource for understanding website performance based on raw server data.

Graylog is a powerful, open-source, centralized log management platform designed for collecting, indexing, and analyzing log data from various sources. It helps organizations gain operational visibility, identify security threats, and troubleshoot issues efficiently.

Open Web Analytics (OWA) is a discontinued open-source web analytics platform designed to provide detailed insights into website traffic and user behavior. Offering real-time data, visitor recording, and various monitoring capabilities, it aimed to be a privacy-conscious alternative to commercial analytics solutions.

Fluentd is an open-source data collector that provides a unified logging layer, enabling you to collect, parse, transform, and output logs from various sources to multiple destinations. It is written in Ruby and highly pluggable.