Question: I'm looking for a file storage service that allows real-time collaboration on documents and automatic file versioning.

If you're looking for a full-featured file storage service with real-time collaboration and automatic file versioning, Dropbox is a great choice. Dropbox offers protected file storage with version history, password protection, and a range of plans for individuals and teams. It also offers automated workflows, PDF editing and video tools for feedback. The AI-powered Dropbox Dash helps you organize and share content.

Another powerful option is Jottacloud, a private cloud storage service that uses environmentally certified servers in Norway. It offers real-time document collaboration, automatic file versioning and offline access. With strong security features like two-factor authentication and GDPR compliance, Jottacloud is good for personal and business use. It offers flexible pricing, including a free 5GB option and a Personal Unlimited plan for €11.90 per month.

If you're looking for a more sophisticated collaboration tool, check out Box. Box offers secure collaboration, native e-signatures and workflow automation. It integrates with more than 1,500 popular apps and offers AI-powered insights to help you work more efficiently. Box has a range of plans for companies of all sizes, and it's designed to meet the requirements of highly regulated industries.

Bit.ai is also worth considering, especially if you need a platform with powerful AI tools. Bit.ai offers real-time collaboration and features like interactive living documents, AI-assisted writing and detailed tracking. It integrates with more than 100 services and offers a range of sharing options, making it a good choice for creating, sharing and tracking documents.