
Description: Nagios Log Server is an open-source log monitoring and analysis tool. It aggregates logs from multiple sources, analyzes them in real-time, and provides alerting, reporting, archiving and data visualization capabilities.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Graylog is an open source log management tool that collects, indexes, and analyzes log data in real-time. It provides searching, dashboards, alerts, and data analysis functionality.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API