Question: I need a tool that allows multiple users to collaborate on documents in real-time, with features like commenting and tracking changes.

If you need a powerful tool for real-time document collaboration with commenting and version history, Bit.ai is a great option. This AI-infused platform lets multiple people work on documents, notes and wikis with rich design features and powerful search. It offers interactive living documents, AI-boosted writing, inline commenting and a range of sharing options including password protection and trackable links.

Another strong option is Coda, which combines document, spreadsheet and app tools into one workspace. Coda's AI technology helps you collaborate with features like AI Chat, AI Assistant and AI Column that offer quick answers and automate work. It integrates with more than 600 tools so you can assemble workflows, and offers prebuilt solutions for product, sales and design teams.

Notion is another flexible platform that lets you keep a lot of work apps in one place. It has a drag-and-drop interface for building pages and sharing ideas, and AI-powered data visualization and filtering. Notion is flexible for many teams and use cases, including company wikis, product roadmaps and meeting notes, so it's a good option for collaborative document management.

Finally, Matilda offers a full featured AI-powered workspace for real-time co-editing, project management and data synchronization. It has features like custom AI assistants, real-time chat and customer interaction management, so it's good for teams in many fields. With multiple pricing levels and a 90-day money-back guarantee, Matilda offers a flexible and potentially economical option for boosting collaboration and productivity.