Walker is a centralized search interface and application launcher designed to find and start installed software, system tools, and local files. It functions as a single entry point for executing desktop applications, running shell commands, and managing system scripts.
The project uses a provider-based plugin architecture to extend its capabilities via independent modules. It allows for deep visual and behavioral customization through CSS styling, XML-defined layout templates, and layered configuration overrides.
The system includes integrated productivity tooling for mathematical calculations, web searches, clipboard history management, and special character insertion. It further covers system administration tasks such as managing active windows, controlling hardware peripherals, and handling system packages.