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
KakaoTalk is a versatile messaging app popular in South Korea, offering rich multimedia features and payment integration, but has a more limited international reach. In contrast, Kopete is an open-source instant messenger supporting multiple protocols, making it flexible and customizable, but it lacks some of the modern features found in contemporary messaging apps.