
Description: SeaLion is an open-source, cross-platform text editor and IDE. It has support for hundreds of programming languages and markup languages, with syntax highlighting, autocompletion, and other coding assists. SeaLion is customizable and extensible with plugins.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Nagios is an open-source monitoring system that allows administrators to monitor network infrastructure like servers, switches, applications, and services. It can notify users when issues arise and help identify problems in a timely manner.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API