
Description: InstAddr is an open-source alternative to MailChimp for email marketing campaigns. It provides easy tools for building email lists, designing campaign templates, and tracking engagement.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Fripost is an open source email platform designed to provide privacy and security. It offers full email functionality including email, calendar, and contacts with encryption for stored data.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API