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Stratum

A privacy-first, offline-capable personal knowledge management system.

Notes are plain Markdown files on disk — zero vendor lock-in. Every paragraph is an addressable block. Wiki-links, graph visualization, Datalog queries, Git sync, and AI-augmented search — all powered by a Rust core.

  • Plain Markdown

    Your notes are .md files readable by any editor. No proprietary format.

  • Fully Offline

    No cloud dependency. All features work without internet.

  • Knowledge Graph

    Interactive force-directed graph of [[wiki-links]] with connected components.

  • Full-Text Search

    Tantivy-powered search, sub-100ms at 10,000+ notes.

  • Datalog Queries

    Query your knowledge graph with Datalog — EDN or JSON syntax.

  • AI-Powered

    Pluggable LLM providers. Rewrite, summarize, link, research with RAG.

  • Git Sync

    Auto-commit, push, pull. Your version history is built-in.

  • Extensible

    WASM plugin runtime. Customize without forking.

Quick Start

# Nix (recommended)
nix develop ./nix

# Or build manually
cargo build --workspace
npm install
cargo tauri dev

See the Installation Guide for detailed setup.

Features at a Glance

Feature Description
Block Outliner Every paragraph is a UUID-addressed block. Indent, outdent, drag, collapse.
Wiki-Links [[Page Name]], [[Target\|Display]], ((block-ref)), {{embed}}
Tags #tag inline and YAML frontmatter tags
Tasks TODO, DOING, DONE markers with priorities
Graph View Force-directed graph, connected components, orphan detection
Search Full-text block search via Tantivy. Tag search with #tag
Datalog Query blocks with Datalog: :find, :where, :pull
Journal Daily notes, auto-created
Templates Reusable templates with variable substitution
Flashcards Spaced repetition (SRS) with question::/answer:: syntax
Whiteboards Excalidraw spatial canvas
Math KaTeX inline and display equations with symbol palette
Mermaid Flowcharts, sequence diagrams, Gantt charts inline
AI Rewrite, structure, summarize, connect with AI. RAG chat
Web Research SearXNG-powered multi-depth research
Git Sync Auto-commit, remote push/pull, conflict detection
Export HTML and JSON export
CLI Full CLI: init, list, search, stats, graph, sync, export
Plugins WASM plugin runtime

Why Stratum?

No vendor lock-in. Your knowledge is stored as plain Markdown files. If Stratum disappears tomorrow, you still have all your notes — readable by any text editor.

Privacy by design. Everything runs locally. AI providers are optional and self-hosted (Ollama) or configured to your own API keys.

Performance. Rust backend means sub-100ms search, instant graph rendering, and minimal memory usage (<80MB idle).

Block-based. Like Logseq, every paragraph is a first-class entity with a UUID. Link to specific blocks, embed them in other pages, query them with Datalog.

Project Status

Stratum is in active development. Version 0.5.0. All core features are implemented and working.