A living knowledge system for everything you think, learn, and write.
Capture ideas, connect thoughts, and build a second brain that's entirely yours — self-hosted, offline-first, and beautifully fast.
No cloud, no telemetry, no subscription. Your data, your rules.
Capture anything, instantly
Never lose an idea again. From quick thoughts to full articles, capture web clips, voice notes, and structured templates — all in one place.
- ▸One-click web clipper
- ▸Voice-to-note transcription
- ▸Smart templates for every note type
Write with a Markdown-first editor built for depth
A distraction-free editor that gets out of your way. Slash commands, wikilinks, code blocks, tables, and task lists — all stored as portable Markdown you own.
- ▸Slash command menu
- ▸Inline wikilinks & backlinks
- ▸Full Markdown + rich formatting
Every note finds its neighbors
Bidirectional linking surfaces unexpected connections. As you write, your knowledge graph grows — showing you how ideas relate without manual tagging.
- ▸Automatic backlink detection
- ▸Linked mentions panel
- ▸Graph view shows the full web
See your knowledge as a living atlas
An animated, interactive graph turns your notes into a navigable constellation. Zoom, filter, and traverse your knowledge visually.
- ▸Force-directed, animated graph
- ▸Filter by type, tag, or date
- ▸Click any node to open the note
Find anything with Postgres-native search
Full-text search, fuzzy matching, and semantic similarity powered by Postgres — not a third-party SaaS. Works offline with a local Fuse.js index.
- ▸FTS + trigram fuzzy search
- ▸Semantic similarity via pgvector
- ▸Offline client-side index
A fresh page for every day
Open your daily note and capture the day — tasks, reflections, ideas. Link forward to projects and back to yesterday. Mood tracking, streaks, and calendar heatmaps.
- ▸Auto-created daily notes
- ▸Mood + streak tracking
- ▸Calendar heatmap view
Structured notes for deep work
Dedicated note types for research papers, books, technical deep-dives, and meeting notes. Custom metadata fields, source tracking, and citation support.
- ▸Research / book / technical note types
- ▸Source URL + citation fields
- ▸Reading time & word count
AI that works with your knowledge
Claude-powered summarization, tagging, and Q&A — all opt-in and never cloud-synced without your permission. Your private notes stay private.
- ▸Opt-in AI summaries & tags
- ▸Chat with your notes
- ▸Semantic search via Voyage embeddings
Designed for total data sovereignty
No telemetry. No analytics. No SaaS vendor holding your notes hostage. Self-hosted Postgres means your knowledge stays on infrastructure you own and control.
- ▸Zero telemetry by default
- ▸Locked/encrypted private notes
- ▸Export everything, anytime
Never locked in
Import from Obsidian, Notion, and Evernote. Export any note or your entire vault as plain Markdown. Your knowledge is portable by design.
- ▸Obsidian, Notion, Evernote importers
- ▸Markdown + JSON export
- ▸Standard file formats throughout
Built differently from the start
Self-hosted, your data on your server
Not a SaaS silo you rent. Your notes live in your own Postgres database on your own infrastructure. No vendor lock-in, no subscription required.
Single-user by design — no team tax
Built for one person thinking deeply. No multi-tenant complexity, no seat pricing. The single-owner model means every feature is optimized for you, not the enterprise.
Offline-first PWA
Works without internet. A service worker and IndexedDB cache keep your notes accessible and writable offline, syncing when connectivity returns.
Postgres-native deep search
Full-text search (FTS), fuzzy trigram matching, and semantic vector search — no Algolia subscription, no Elasticsearch cluster. Just Postgres doing what it does best.
Markdown you own, never locked in
All content is stored as plain Markdown. Export your entire vault at any time. Your knowledge travels with you, always.
Ten distinct visual personalities
Click any theme to apply it live. Each is carefully tuned — not just a color swap.
Your knowledge deserves a home you own.
Set up your personal knowledge OS in minutes. No accounts, no subscriptions — just your notes, your server, your rules.
Self-hosted · No cloud · No telemetry · Open source