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Mneme 4.2 · a second brain · pronounced “nee-mee”

Write it down. Mneme draws the lines.

A note-taking app that links your thoughts on its own, answers questions from what you’ve written, and brings the right note back on the right day. Plain Markdown, on your device, entirely yours.

Download for macOSOpen in the browser

Fig. 1 — One person’s September. 31 notes, 40 links, drawn by nobody. Hover or tab to a star.

A note is a star. A link is a line. Over time, you get a sky.

Most note apps are drawers. You put things in; they stay put; you forget which drawer. Mneme treats every note as a point of light and keeps quietly working out which ones belong together — so the thing you wrote in March is there, already connected, when you need it in November.

How a thought becomes a constellation

IFirst light · capture

Catch it before it fades.

A thought doesn’t wait for you to open the right app. Mneme takes it from wherever you are — the menubar, your phone’s share sheet, a forwarded email, a web page, a voice memo on the walk home — and files it into today.

menubar · share sheet · you@in.mneme.app · web clipper · voice, transcribed on-device

Inbox → daily/2026-09-22.md5 captured
  • ⌥ SpaceAsk Marco re: Q4 headcount before Thursday
  • fwdFwd: Hotel Lisboa Plaza — confirmation #48213
  • web“As We May Think” — The Atlantic, July 1945
  • sharePhoto of the whiteboard after retro, 3 highlights
  • 0:42Walking home — memex, but it files itself?

IILines · links itself

It notices what belongs together.

As you write, Mneme reads alongside you and proposes links to related notes — by meaning, not just matching words. Accept with a keystroke, or ignore it. Every note carries its backlinks, so nothing is ever only in one place.

You never file anything. The structure just appears, the way constellations do.

ideas/a-quieter-calendar.md

What if the calendar defended evenings the way it defends meetings? Block 19:00–22:00 by default, make people ask. I noticed I sleep worse on days with late calls

Mneme noticed

“late calls” relates to Sleep log, September — you wrote “bad night after the 21:30 call with Sydney” on 14 Sep.

↵ Linkesc Not now
4 backlinks↳ Daily — 18 Sep↳ Why I stopped using folders↳ Q4 planning

IIIReturn · resurfacing

Old light, arriving on time.

Each morning, Mneme brings back a handful of notes: what you wrote a year ago today, and what quietly relates to what you’re working on now. A few minutes with your own past thinking, instead of none.

Pro · never more than five a day · never a push notification unless you ask

1 year ago today22 Sep 2025

Kyoto, day 4 — onsen rules

Wash first, sitting down. Towel on your head, never in the water. Nobody explains this; everybody knows.

Relates to what you’re writing9 Mar 2024

Why I stopped using folders

Every folder is a guess about the future. I’m bad at guessing. Links are a record of the past, which I’m better at.

You flagged this to revisit2 Jan 2026

Books to reread

The Extended Mind (again, slower). Gödel, Escher, Bach — just the dialogues. Pilgrim at Tinker Creek.

IVThe instruments

Daily notes, the whole graph, instant search.

The fundamentals, done carefully. A fresh page every morning. A graph you can actually navigate, filtered by time or tag. Full-text search across years of notes that returns before you finish typing.

onsen3 results · 4 ms

  • Kyoto, day 4 — onsen rules

    Wash first, sitting down. Towel on your head…

    22 Sep 2025

  • Kyoto — reading list

    …Kawabata, and that essay on onsen architecture

    10 Sep 2025

  • Daily — 3 Feb 2026

    Mum asked about the onsen trip for her 70th?

    3 Feb 2026

The app

Quiet on the surface. Busy underneath.

A calm writing surface in the middle. Your links, backlinks and a local map of the sky at the edges — there when you glance, gone when you don’t.

VAsk your notes

Ask a question. Get your own answer back.

Ask in plain language. Mneme answers only from what you’ve written, and cites the exact notes it used — so you can see where every sentence came from, and check it. If your notes don’t know, neither does Mneme. It says so.

What did we decide about the Lisbon offsite budget?

You capped it at €18,400 for 14 people, after dropping the Palácio venue for being too far from the airport. Inês quoted €2,150 for three days of catering, which you marked “fine if lunch only”. One loose end: flights still weren’t booked as of 9 September.

  1. 1

    Lisbon offsite — budget2 Sep 2026

    Hard cap €18,400 / 14 people. Dropping Palácio — 50 min from the airport.

  2. 2

    Call w/ Inês — catering4 Sep 2026

    €2,150 for three days. Fine if lunch only; dinners we do in town.

  3. 3

    Daily — 9 Sep 20269 Sep 2026

    Still haven’t booked flights. Before Thursday, before prices jump.

Answered from 3 of 2,418 notes · every claim cited · nothing sent for training

Sources, in your sky

123

Hover a citation to find it

VILocal-first & private

Your sky stays over your house.

Plain Markdown files
Every note is a .md file in a folder you choose. Open them in any editor. Leave any time and take everything.
End-to-end encrypted sync
Notes are encrypted on your device before they travel. Your keys never leave your devices; we can’t read them, and neither can anyone who asks us.
Offline, fully
Writing, search, links and the graph all work on a plane. Sync catches up when you land.

Finder → ~/Mneme

~/Mneme
├── daily/
│   ├── 2026-09-21.md
│   └── 2026-09-22.md        ← today
├── ideas/
│   └── a-quieter-calendar.md
├── work/
│   ├── lisbon-offsite-budget.md
│   └── 1-1-marco.md
├── garden/
│   └── san-marzano-week-14.md
└── .mneme/                  ← local index
$ head -4 ideas/a-quieter-calendar.md
---
created: 2026-09-18T22:41
links: [team-retro-august, sleep-log-september]
---

From people with a few thousand stars

“I’ve tried every graph app. Mneme is the first where the graph showed me something I didn’t already know: two research threads, eleven months apart, about the same question.”
Hana KovačPhD candidate, cognitive science
“Before a board meeting I asked it what we’d promised investors in Q1. It answered in four sentences and cited six of my own notes. I checked every one.”
Tomás FerreiraCOO, 40-person design studio
“The morning resurfacing is the only notification I look forward to. Some days it’s a recipe. Some days it’s a whole chapter I’d forgotten I’d started.”
Adaeze ObiNovelist

Free to begin. Fair when it grows.

Notes are never capped and never held hostage. Downgrade any time — your files stay exactly where they are.

Free

For one person on one device.

$0forever

  • Unlimited notes
  • Automatic links & backlinks
  • Daily notes, graph view, instant search
  • Capture from menubar, email, web, voice
  • Plain Markdown, local-first
  • 1 device
Download free

Pro

Most chosen

Your whole sky, on every device.

$8per month

  • Everything in Free
  • End-to-end encrypted sync, unlimited devices
  • Ask your notes, with citations
  • Daily resurfacing feed
  • Priority support from people who use it
Start 14 days free

Teams

Shared constellations for small teams.

$14per user / month

  • Everything in Pro
  • Shared spaces with per-space access
  • Links across personal and shared notes — only you see your side
  • Ask across a shared space
  • Central billing & admin
Talk to us

Start with one note tonight.

In a year, you’ll look up and find a sky.

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