
Description: ElastAlert is an open-source rules engine for alerting on anomalies, spikes, or other patterns of interest in time series data stored in Elasticsearch. It enables users to easily create monitors that will send notifications when user-defined conditions are met.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Bosun is an open-source monitoring and alerting system created by Stack Exchange. It is designed to monitor and alert on time-series data from systems like databases, metrics systems, and web servers.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API