
Description: Grafana Loki is an open source logging aggregation system designed to be part of the Grafana ecosystem. It is optimized for saving, indexing, and querying logs through labels and streams.
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