Question: Is there a tool that can analyze my documents and answer questions about their content?

ChatDOC is an AI information retrieval system that can analyze and summarize documents in many formats, including PDF, DOC, EPUB and more. It can provide quick answers to questions, more detailed AI explanations and even image analysis with GPT-4 integration. With features like multi-document chat and math formula analysis, it can be a useful AI assistant. It also has a browser extension for uploading files and encryption for privacy.

Another option is ChatPDF, which is geared specifically for PDFs. It can handle documents in any language and can provide answers with source citations. It can handle multi-file chats, too, so you can organize a group of PDFs into a single conversation. It's good for students, researchers and professionals who want to quickly get the most out of their PDFs.

For a more powerful tool, Unriddle can provide quick answers to questions and help you understand information better. It can handle large PDF files, create interactive graphs to show relationships, and work in more than 90 languages. It's good for researchers who need to quickly digest and extract information from lots of documents.

Last, PDF GPT offers quick summarization, question answering, translation and citation services. It can handle a variety of documents and works in more than 90 languages. Its free version offers basic abilities, but the Pro version lets you upload as many files as you want. It can save you a lot of time and effort.