- AppFlowy by AppFlowy-IO, 79k stars. Open source workspace for notes, wikis, and projects, with local data control
- AFFiNE by toeverything, 75k stars. Open-source workspace for docs, whiteboards and planning with CRDT sync
- memos by usememos, 64k stars. Self-hosted note-taking app organized as a personal timeline
- joplin by laurent22, 57k stars. Note-taking app with sync for Windows, macOS, Linux, Android and iOS
- siyuan by siyuan-note, 47k stars. Local-first markdown note app with AI agent access and self-hosted sync
- logseq by logseq, 46k stars. Local-first outliner for notes and knowledge graphs in Markdown or Org-mode
- open-notebook by lfnovo, 42k stars. Self-hostable research notebook that chats with your sources, an open NotebookLM alternative
- outline by outline, 41k stars. Team knowledge base with real-time collaborative editing and markdown support
- claude-obsidian by AgriciDaniel, 16k stars. Claude Code setup that files sources into a linked Markdown vault for Obsidian
- Lepton by hackjutsu, 10k stars. Electron app for saving and managing code snippets as gists
- anarlog by fastrepl, 9.9k stars. Local-first desktop app for AI meeting notes and transcription
- obsidian-second-brain by eugeniughelbur, 5.3k stars. Persistent memory for coding agents, stored as markdown in Obsidian
- colanode by colanode, 5.2k stars. Local-first chat and knowledge base app, an alternative to Slack and Notion
- open-knowledge by inkeep, 4.8k stars. Markdown editor and knowledge base with AI features and agent skills
- My-Brain-Is-Full-Crew by gnekt, 3.9k stars. Personal second brain setup that covers health and habits alongside notes
- edgeever by tianma-if, 3.2k stars. Knowledge base with native MCP support, runs on Cloudflare Workers or Docker
- EverRoom by NxcoreAI, 3.0k stars. Notes workspace that keeps project context and decisions for AI assistants
- PaperTodo by snownico0722, 2.8k stars. Minimal Windows sticky notes with to-dos and Markdown
- anchor by ZhFahim, 1.8k stars. Offline-first, self-hostable note taking app
- yogurt by FrigadeHQ, 1.5k stars. Private AI meeting notes app that runs models locally
- Daily_You by Demizo, 1.4k stars. Flutter journal app for private diary entries and mood tracking
- get-it by beltromatti, 1.2k stars. Study app that turns content into flashcards and explanations with Codex
- compass by AgriciDaniel, 1.0k stars. Obsidian vault setup for daily questions, planning, habits and journaling
- memex by memex-lab, 839 stars. Local-first journal app for iOS and Android that organizes notes with AI agents
- avenoxbeyin by avenoxai, 468 stars. Obsidian and Claude Code setup with memory that persists across sessions
- Skykeep by YashwanthKamireddi, 416 stars. Native Windows and Linux clients for iCloud notes, reminders, calendar and more
- health-md by CodyBontecou, 236 stars. Apple Health data exported as markdown notes, for Obsidian and similar
- enzyme by byenzyme, 157 stars. Local-first tool that compiles notes into a searchable knowledge base
- DocMason by JetXu-LLM, 152 stars. Turns office documents into a local knowledge base queried through Codex
- flint by flint-md, 150 stars. Electron markdown workspace with a local graph view and Ollama support
- dropmind by oldany, 141 stars. Self-hosted inbox for saving notes and links from anywhere
- litpage by litmers-dev, 104 stars. Self-hosted notes and wiki workspace running on Node.js with SQLite
- brainotes by swimmingbrain, 84 stars. Handwritten notes and whiteboard in the browser, stored locally
- brain-map-skill by vladignatyev, 74 stars. Agent skill that turns Markdown notes into an interactive HTML knowledge map
- BetterStickies by HimaSphere, 69 stars. Sticky notes app with reminders, checklists, and note tabs for Windows, Linux, and macOS
- log-mode by luqtas, 3 stars. Emacs major mode for outline-style logs and notes, a Logseq-style alternative
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