Question: I need a solution that helps me create and share digital documents securely, with features like password protection and single sign-on, and also tracks engagement metrics.

If you need a way to create and share digital documents with some security features like password protection and single sign-on, Bit.ai is worth a look. It's an AI-infused document collaboration tool that lets you create, edit and share documents, notes and wikis with a lot of design control. Bit.ai has real-time collaboration, lots of sharing options and engagement tracking, so it's a good all-purpose tool for secure document collaboration.

Another good pick is Dropbox, a secure and mature file-sharing service. It's got protected file storage, password protection and real-time document analytics. Dropbox is good for collaboration and data protection, and its AI-powered tool, Dropbox Dash, helps you organize content. With several pricing tiers including a business tier, Dropbox is good for personal and professional use.

If you're looking for a design-first approach, PageTiger offers a powerful tool with interactive elements like videos, quizzes and charts. It's got good security controls like password protection and single sign-on. PageTiger also has analytics to see how engaged your audience is, so it's good for branded documents with interactive elements for employee communications, onboarding and customer communications.

Last, Foxit PDF Editor is a flexible tool for creating, editing and managing documents with security. It's got features like legally binding e-signatures, integration with Microsoft and Google tools, and AI tools for analyzing and translating documents. Foxit has enterprise-grade security and compliance, so it's a good choice for companies that need more powerful digital document tools.