v3.2 — synaptic search now live

A second brain
that thinks with you.

Mnemos connects every note, quote, and fleeting thought into a single living graph. Capture anything, forget nothing, rediscover everything.

Start free for 30 days Watch the demo →

/ Capabilities

001 / Neural capture

Inbox zero, second-brain style.

Drop links, voice memos, screenshots, highlights. Mnemos auto-tags, links, and routes them to the right constellation of ideas.

002 / Bidirectional links

Notes that grow with you.

Every reference is a thread. Watch your knowledge graph expand as you write — surfacing connections you'd never have seen.

003 / Semantic recall

Ask in plain language.

"What did I read about flow states last month?" Mnemos understands intent, not just keywords. It remembers so you don't have to.

A Reading & Writing Companion

The quiet art of remembering everything.

A digital commonplace book for the long-form reader — a place for marginalia, citations, and the thoughts that arrive unannounced at three in the morning.

By the Editors · 12 Minute Read · Long-form Notes

Start Your Commonplace Read the manifesto

Memory is not a vessel to be filled but a fire to be kindled. — Plutarch

A man who keeps a commonplace book is a man who has learned that nothing is too small to remember.

On the art of attention — Heidegger, "The Way to Your Home"

Cf. Bergson on the difference between habit-memory and recollective memory.

"To think is to forget a difference, to generalize, to abstract." — Borges, Ficciones

i.

Marginalia, digitized.

Annotate PDFs, web articles, and books. Your notes live next to the source — context preserved, citations intact.

ii.

The slip-box method.

Luhmann wrote 90,000 cards. His second brain was a wooden file box. Ours is a touch faster.

iii.

Daily & durable.

Capture fleeting thoughts in the morning journal. Promote the survivors to your permanent library each evening.

~/mnemos · main · 3 notes unsaved

⊟ ⊕ ⊗

a second brain for people who type

Your notes. "Linked." Local. Yours.

A markdown-native, local-first note app for engineers, researchers, and lifelong learners. Plain text forever. Backlinks automatic. Search that actually finds things. Your vault is a folder of .md files — readable in 50 years.

$ npx mnemos init View on GitHub

// FEATURE_01

local-first, plain-text

Your vault is a folder on disk. No lock-in, no proprietary format. Works offline. Syncs via your own git repo or iCloud.

// FEATURE_02

bidirectional [[links]]

Type [[ to link. Backlinks update automatically. Watch your knowledge graph grow as you write.

// FEATURE_03

graph view & semantic search

See your whole vault as a constellation. Or search with natural language. Or full-text grep. Take your pick.

connected vault: ~/notes 847 notes · 2.3MB

LF · UTF-8 · markdown Ln 42, Col 18

記

The Way of Memory

Thoughts arrive.
You receive them.

A note-taking practice shaped by wabi-sabi — the beauty of imperfection, the quiet of empty space, the art of letting ideas settle before keeping them.

Begin the practice read the principles →

一 · ICHI

Capture, then forget.

Each thought passes through your hand like water. You write it down, and release it. The mind is for living, not remembering.

二 · NI

The empty inbox.

Inbox zero is not productivity theater. It is the practice of returning each day to a quiet desk, ready to receive.

三 · SAN

Slow linking.

Connections between notes are not formed at the moment of writing. They emerge, days later, in the act of revisiting.

ARCHIVE № 17 · ATLAS OF THE MIND · EST. MMXXVI

CATALOGUED

1 of 1,247 ENTRIES

Catalogue of Human Thought · Vol. I

Map the continent of ✦ everything you know.

Atlas is a second brain for the curious mind — every note a place, every connection a route, every idea a territory waiting to be explored. Built for the slow reader, the patient researcher, the lifelong collector.

Begin Cartographing View a sample map →

N

I · THE TERRITORY

Every note, a place.

Thoughts live in regions of meaning. Atlas groups them by concept, not chronology, so your knowledge develops a geography you can navigate by feel.

II · THE ROUTES

Connections, drawn.

See how ideas relate across decades of reading. The lines between notes are not search results — they are cartography, drawn by you.

III · THE EXPEDITION

Read slowly. Remember always.

Atlas is built for the patient researcher. No streaks, no notifications, no productivity theater. Just a quiet, infinite map of what you know.

A second brainthat thinks with you.