Question: Is there a document management system that allows real-time collaboration and user access control?

If you're looking for a powerful document management system with real-time collaboration and user permission controls, Bit.ai is a top contender. It comes with features like AI-powered writing, interactive living documents and a smart editor, along with powerful tracking abilities and a range of sharing options. The service also includes tools to create custom workspaces, and it has enterprise pricing tiers for more advanced security and access controls.

Another top pick is Coda, which offers an all-in-one collaborative workspace. Coda combines documents, spreadsheets and apps to boost team productivity and integrates with more than 600 other tools. Features like Writeups for collaborative decision-making, Hubs for centralized information and Trackers for integrated tables make it a good choice for teams working on a variety of projects.

Box is another option, particularly if your team needs more advanced security controls and artificial intelligence-powered threat detection. Box offers secure collaboration, native e-signatures and automated workflow, making it a good fit for marketing, sales, HR, finance and engineering teams. With more than 1,500 app integrations, it works well with other tools your team already uses.

Last, Notion offers a customizable workspace where you can manage projects and work with your team. Its AI-powered data visualization and filtering abilities let you track and manage information. Notion is flexible enough to be used by many teams, so it's a good choice if you need a tool that can adapt to different work needs.