Kopete is a multi-protocol, free software instant messaging client released as part of the KDE Software Compilation. Although it can run in numerous environments, it was designed for and integrates with the KDE Plasma Workspaces. Developed by kde.org
License: Open Source
Kopete is a versatile, open-source instant messaging client that supports multiple chat protocols, making it suitable for users who require extensive protocol support. In contrast, YakYak is a lightweight, Electron-based app focused primarily on Google Hangouts, providing a more streamlined experience for users dedicated to that platform.