Open source Note Taking & Knowledge Management tools
29 free, open source options sorted by GitHub stars.
AppFlowyAI workspace for docs, projects, and wikis you controlAffineDocs, whiteboards, and databases in one privacy-first workspaceMemosSelf-hosted timeline for quick notes, logs, and snippetsJoplinEncrypted note-taking that syncs across all your devicesSiYuanPrivacy-first knowledge management with block-level linkingLogseqPrivacy-first knowledge base that connects your notesOutlineFast, collaborative wiki for teams who need organized docsOpen-NotebookAI-powered research notebook with full privacy controlKhojAI second brain for research, automation, and personal agentsKeePassXCCross-platform, secure password managerDocmostSelf-hosted wiki with AI, compliance, and real-time editingTolariaLocal-first, Git-native personal knowledge base with AISurfSensePrivacy-first knowledge base with any AI model you chooseZoteroCollect, organize, cite, and share research in one placeNotesnookZero-knowledge encrypted notes that sync across all devicesBlinkoAI-Powered Note Taking AppAnarlogPrivate meeting notes, no bots, files you ownAnyTypePrivate workspace for notes, tasks, and databasesStandard NotesSecure, encrypted notes for your digital lifeSilverbulletProgrammable notes with queries, Lua scripting, and wiki linksDeta SurfBrowser and notebook combined with local-first AIVriteCollaborative content creation for technical teamsBeaver NotesLocal-first notes app with no cloud, no AI, no trackingXWikiOpen-source knowledge management and collaboration platformZenClean, distraction-free note-taking with local storageDarkwriteDistraction-free note-taking with powerful featuresOpenNotasFast, secure, and free personal note-taking appJustnotePrivacy-focused note-taking made simple and fastitsnotesSelf-hosted sticky notes with better organization