Linux Softwares to Extensible by Plugins

SpaceFM is a highly configurable desktop-independent file and desktop manager for Linux and other Unix-like systems. It offers a multi-panel, tabbed interface with extensive keyboard control and built-in tools, providing a powerful alternative to traditional file explorers.

Konsole is a powerful and highly customizable open-source terminal emulator provided as part of the KDE Applications suite. It offers advanced features like split panes, tabs, session management, and extensive configuration options tailored for developers and power users.

Spark is a free, open-source instant messaging client optimized for businesses and organizations. It integrates seamlessly with Openfire servers and supports a wide range of features including group chat, file transfers, and screen sharing, making it a versatile communication tool.