Siket is a browser extension that replaces the default new tab page with a productivity workspace. It is designed for Chrome, Edge, and Brave browsers. The tool integrates multiple task management and organization features into a single interface, allowing users to access to do lists, focus modes, email, calendar, tab sessions, habit tracking, and AI assistance directly from the new tab. The interface is keyboard first, meaning users can navigate and execute commands without relying on a mouse. The primary function of Siket is to serve as a command center for daily workflow. Users can manage tasks, schedule events, review emails, and organize browser tabs within the same view. The inclusion of habit tracking supports long term goal setting, while the AI component provides contextual assistance. The tool is browser native, meaning it operates as an extension rather than a standalone application, and it does not require additional software installations beyond the browser itself. Typical use cases include starting the workday by reviewing a consolidated view of tasks and calendar events, entering a focused work session using the focus mode, and saving groups of tabs as sessions for later retrieval. The keyboard first design appeals to users who prefer efficient, shortcut driven interactions. Technical requirements are minimal: the user must have a compatible browser (Chrome, Edge, or Brave) and install the extension from the respective web store. The app is accessible at siket.app.