
Description: Evolution is an open-source email client for Linux designed to be simple, fast, and secure. It supports standard email protocols like IMAP, POP3, and SMTP and includes features like spam filtering, email signatures, calendar integration, and customizable themes.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: K-9 Mail is an open source email client for Android focused on security and privacy. It supports multiple accounts, search, tagging, notifications and more.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API