
Description: Markie is an open-source content validation tool for websites. It checks for broken links and images, validates HTML, and analyzes page speed and accessibility. Markie integrates with continuous integration tools to automate testing.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Epistle is an open-source email client focused on privacy and security. It allows users to easily encrypt emails and includes features like anonymous mailing lists and sender authentication.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API