Name Description Country Est. Links
Capacities Object-based note-taking. Think in terms of things, not files. 🇩🇪 DE 2021
Heptabase Visual note-taking for complex topics. Whiteboard + cards. 🇹🇼 TW 2021
Logseq Open-source, privacy-first knowledge base. Outliner + graph.
Obsidian Markdown-based knowledge base with bidirectional linking. Local-first. 2020
Reflect Networked note-taking with AI integration and end-to-end encryption. 2021