Synapse
A family of apps for your second brain

Your knowledge.
Connected. Owned. Alive.

Synapse is a growing family of beautiful, GitHub-backed apps that turn your notes, meetings, and ideas into a living second brain — readable by you, your tools, and your AI agents.

Explore the family Why GitHub?
The Synapse Philosophy

GitHub at the heart. Always.

Your second brain shouldn't be locked in someone else's database. Synapse apps write plain Markdown straight to a private GitHub repository you own — versioned, portable, and instantly readable by every AI tool on the planet.

You own the data

Plain Markdown files in your repo. No proprietary format, no vendor lock-in, no rug-pull. If Synapse ever disappears, your knowledge doesn't.

Sync is just Git

Every device pulls and pushes the same repo. No bespoke sync engine, no mystery conflicts — just the most battle-tested versioning system on Earth.

Agent-ready by default

Because your knowledge is in a GitHub repo, every AI agent — Claude, Cursor, ChatGPT, your own — can read it, search it, and contribute back.

Built for the long haul

Markdown files are still readable in 50 years. Your second brain should outlive whatever app you happen to use today.

Built in the open

Open source. Always.

Every node in the Synapse family — Notes, Meetings, Commander, Web Clipper, and the apps still to come — is open source, and will always stay that way. Read the code, file an issue, send a PR, fork it for your team. Your second brain shouldn't depend on a black box.

Synapse Notes Synapse Meetings Synapse Commander Synapse Web Clipper MIT licensed

Synapse Cloud, coming soon, will offer an optional membership that unlocks advanced scheduled automations on your note vaults. The apps stay free and open. The membership is opt-in — for when you want a tireless agent tending your vault while you sleep.

The Family

Five apps. One brain.

Each Synapse app does one thing brilliantly — and they all sync through the same private GitHub vault.

Available now

Synapse Notes

A beautiful, Markdown-first, GitHub-backed notes app for macOS.

Your second brain, designed for developers, knowledge workers, and AI-agent knowledgebases. Live-styled Markdown editor, wikilinks, embedded notes, slash commands, daily notes, a graph view of your entire vault, and built-in Git auto-sync.

  • Live-styled Markdown with preview & distraction-free modes
  • [[Wikilinks]], ![[embeds]], slash commands & templates
  • Local + global graph view of your entire vault
  • Git auto-sync, conflict handling, view history
  • Command palette, tabs, split panes, pinning, tags
Visit synapsenotes.app Download for macOS ↗
Available now

Synapse Meetings

Fast, brilliant, simple meeting recording — transcribed on your machine.

Record system + microphone audio, transcribe locally with Apple Neural Engine via Core ML (Parakeet TDT 0.6B v3), then summarize with best-in-class AI models. Completely bring your own API key. Transcripts and summaries commit straight to the GitHub repo of your choice.

  • System & microphone capture, all local
  • On-device transcription via Apple Neural Engine — privacy first
  • AI-assisted summarization with your Anthropic API key
  • Commit transcripts directly to a GitHub repo
  • Auto-updates via Sparkle, signed & notarized
Download latest release ↗
Available now

Synapse Commander

A lightning-fast, keyboard-driven dual-pane file manager to laser-focus your digital life.

Inspired by the classics — Norton Commander, Midnight Commander — but built for today's macOS with a crisp dark UI and full SwiftUI speed. Two panes, instant type-ahead, F-key file ops, favorites with single-key jumps, and every shortcut you'd expect from a power user's tool.

  • Dual panes with instant Tab switching and clear active-pane focus
  • Type-ahead search jumps the cursor as you type
  • F5 copy, F6 move, F7 new folder, ⌘⌫ trash — always at your fingertips
  • Favorites with single-key shortcuts, persisted across sessions
  • Sortable columns, Finder alias & symlink resolution, range selection
Download latest release ↗ View on GitHub ↗
Available now

Synapse Web Clipper

Save any web page as clean Markdown — straight to a GitHub repo of your choice.

A browser extension that uses Mozilla Readability to extract the main content from any page, converts it to clean Markdown, and commits it directly to the GitHub repo of your choice via your personal access token. Your clippings live alongside your notes — fully owned, fully searchable, fully yours.

  • One-click capture of any article or page
  • Mozilla Readability extracts the real content — no nav, no ads, no clutter
  • Clean Markdown output, ready for your second brain
  • Commits straight to your GitHub repo via personal access token
  • Choose the repo, branch, and folder per clipping
Get it for Firefox ↗ Chrome — Coming soon
Coming soon

Synapse Cloud

Scheduled automations that quietly grow your second brain while you sleep.

Synapse Cloud sits at the heart of your ecosystem, running scheduled automations against the notes vaults you choose — auto-categorizing, auto-linking, surfacing forgotten ideas, and cultivating the second brain of your dreams. We're very excited about this one. ✨

  • Run scheduled AI agents against any of your Synapse vaults
  • Auto-categorize, auto-link & auto-tag new notes
  • Surface forgotten ideas and weekly reviews
  • All work commits back through GitHub — fully auditable
Optional membership

The Notes & Meetings apps stay free and open source. Cloud's advanced scheduled automations are unlocked by an optional, opt-in membership that helps fund the ecosystem.

Stay tuned

The Synapse Family is always growing.

New apps are in the works. Each one will join the same ecosystem — your repo, your data, your brain. Want to be first to hear? Star Synapse Notes on GitHub.