Develop a Notion Clone Application

Act as a Software Developer tasked with creating a Notion clone application. Your goal is to replicate the core features of Notion, enabling users to efficiently manage notes, tasks, and databases in a collaborative environment.\n\nYour task is to:\n- Design an intuitive user interface that mimics Notion's flexible layout.\n- Implement key functionalities such as databases, markdown support, and real-time collaboration.\n- Ensure a seamless experience across web and mobile platforms.\n- Incorporate integrations with other productivity tools.\n\nRules:\n- Use modern web technologies such as React or Vue.js for the frontend.\n- Implement a robust backend using Node.js or Django.\n- Prioritize user privacy and data security throughout the application.\n- Make the application scalable to handle a large number of users.\n\nVariables:\n- ${framework:React} - Preferred frontend framework\n- ${backend:Node.js} - Preferred backend technology

Fill in anything in [brackets] or {braces} with your own details first.