QA76.9 .C67ON PERMANENT LOAN FROM: YOUR BRAIN

Your mind,
on file.

Cortex keeps every note, quote, and half-formed idea catalogued and cross-referenced — so the thought you had in 2019 is still on the shelf the day you need it.

Author: You
Notes on file: 12,408
Cross-references: 61,332
Date due: Never

Start your catalog Browse the stacks ↓

Remember everything

— The card catalog —

Four drawers. Every thought you've ever had.

CTX 005.1

Capture

One keystroke from anywhere — the page, the highlight, the voice memo. Filed before the thought evaporates.

CTX 005.2

Cross-reference

Links instead of folders. Every note lists what points to it, so ideas shelve themselves next to their relatives.

CTX 005.3

Recall

Notes resurface on a schedule. Cortex returns old cards to your desk just before they would fade.

CTX 005.4

Circulation

Local-first and encrypted. Your collection lives on your machine and exports as plain Markdown. No overdue fines.

“I stopped re-reading my notes.
They started coming back to me.

— field note, Cortex user since 2023

DATE DUE SLIPFORM C-1138

A. LOVELACE03.14.2024
M. CURIE07.02.2024
K. JOHNSON11.19.2025
YOUTODAY

Check out your second brain