CherryTree

CherryTree is an open-source application that makes concept mapping and information management accessible to all users. It supports hierarchical note-taking with rich text and syntax highlighting, storing data in versatile single-file or multi-file formats. Whether you're a power user or a casual note-taker, it provides a reliable, feature-rich experience for brainstorming, planning, and organizing tasks. More robust than Xmind or Mindmeister, CherryTree is a free tool that empowers you to work productively across different settings—from office to classroom to home.