Ask HN: Recommendation for a tool for history research (gathering)?

Hello,<p>I&#x27;ve been trying to find a tool to help me gathering and organizing historical and biographical data.<p>I like doing some research on specific interests, but as an amateur I do most of it on text files, sheets and mind maps in a chronological directory structure with images and documents, etc. it is horrendous, but I did not find a tool to help me managing this. Is there something for this use case out there?<p>I believe something like a mind map with chronological information&#x2F;visualisation, cross-linking, attachments and references would work, but I&#x27;m kinda struggling to find the right tool (looking at TreeSheet and another mind-map tool right now, but it is not feeling <i>right</i> yet).<p>Thanks